MCRB on Nasdaq
Seres Therapeutics, Inc.
In its 2026 annual report the company says: “We are a clinical-stage company focused on improving patient outcomes in medically vulnerable populations through discovery and development of novel live biotherapeutic product, or LBP, candidates. We have established field-leading capabilities and platforms that are powered by best-in-field human data sets to advance a portfolio of products that can uniquely address diseases by targeting host pathways that are modulated by microbes in the human body, and, in particular, diseases associated with mucosal barrier-immune interface targets.”4 It is headquartered in Cambridge, United States.2 Its shares trade on Nasdaq under the symbol MCRB.2
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Last updated Oct 21, 2026.
Overview
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- TickerMCRB on Nasdaq2
- IndustryPharmaceutical Preparations2
- HeadquartersCambridge, United States2
- Incorporated inDE3
- Business address200 Sidney Street, Cambridge, Ma 021393
- Filer categoryNon-accelerated filer, Smaller reporting company3
- Legal formCorporation2
- LEI549300GMXBE5NUWISF132
- StatusActive2
- LEI statusLapsed (not renewed)2
- Registered addressC/O The Corporation Trust Company, 19801 Wilmington, United States2
- Registered withDivision of Corporations, Department of State, 48858612
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We are a clinical-stage company focused on improving patient outcomes in medically vulnerable populations through discovery and development of novel live biotherapeutic product, or LBP, candidates. We led the successful development and approval of VOWST, the first FDA-approved orally administered microbiome biotherapeutic and a Breakthrough Therapy designated drug, which was sold to Société des Produits Nestlé S.A., or SPN, and with certain of its affiliates, collectively, Nestlé Health Science, in September 2024. We have established field-leading capabilities and platforms that are powered by best-in-field human data sets to advance a portfolio of products that can uniquely address diseases by targeting host pathways that are modulated by microbes in the human body, and, in particular, diseases associated with mucosal barrier-immune interface targets. We believe clinical and nonclinical…4 From its latest annual report
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Key numbers, fiscal 2025
Where the money goes
Where each dollar of revenue went, fiscal 2025
- Research and development90¢$49.1M
- Profit10¢$5.7M
Out of $789.0K in revenue.5
Where each dollar of operating cash went, fiscal 2025
- Capital spending23¢$252.0K
- Kept or used elsewhere77¢$865.0K
Out of $1.1M of cash from operations.5
Financial statements
Every line of the income statement as filed: the last 3 fiscal years, latest first.5
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Grant revenue | $789.0K | $0 | $0 |
| Total revenue | $789.0K | $0 | $0 |
| Research and development expenses | $49.1M | $64.6M | $117.6M |
| General and administrative expenses | $39.2M | $53.2M | $77.5M |
| Manufacturing services | $6.5M | $3.5M | $0 |
| Total operating expenses | $94.8M | $121.3M | $195.1M |
| Loss from operations | -$94.0M | -$121.3M | -$195.1M |
| Gain on sale of VOWST Business | $80.7M | $5.7M | $0 |
| Interest income | $2.2M | $4.0M | $7.3M |
| Interest expense | $0 | $0 | -$2.5M |
| Other income (expense), net | $16.8M | -$14.1M | $134.0K |
| Total other income (expense), net | $99.7M | -$4.5M | $5.0M |
| Net income (loss) from continuing operations | $5.7M | -$125.8M | -$190.1M |
| Net income from discontinued operations, net of tax | $0 | $125.9M | $76.4M |
| Net income (loss) | $5.7M | $136.0K | -$113.7M |
| Net income (loss) from continuing operations per share attributable to common stockholders - basic | $1 | -$16 | -$30 |
| Net income from discontinued operations per share attributable to common stockholders - basic | $0 | $16 | $12 |
| Net income (loss) per share attributable to common stockholders - basic | $0.64 | $0.00 | -$17.77 |
| Net income (loss) from continuing operations per share attributable to common stockholders - diluted | $1 | -$16 | -$30 |
| Net income from discontinued operations per share attributable to common stockholders - diluted | $0 | $16 | $12 |
| Net income (loss) per share attributable to common stockholders - diluted | $0.64 | $0.00 | -$17.77 |
| Weighted average common shares outstanding - basic | 8.9M shares | 7.8M shares | 6.4M shares |
| Weighted average common shares outstanding - diluted | 8.9M shares | 7.8M shares | 6.4M shares |
| Unrealized gain on investments, net of tax of $0 | $0 | $0 | $10.0K |
| Currency translation adjustment | $0 | $0 | $2.0K |
| Total other comprehensive income | $0 | $0 | $12.0K |
| Comprehensive income (loss) | $5.7M | $136.0K | -$113.7M |
| Unrealized (loss) gain on investments, net of tax | $0 | $0 | $0 |
No quarter-by-quarter statement was filed.
Every line of the balance sheet as filed: the last 5 fiscal years (annual) or 5 quarters (quarterly), latest first.5
| Period ending | 2025-12-31 | 2024-12-31 | 2024-02-29 | 2023-12-31 | 2022-12-31 |
|---|---|---|---|---|---|
| Cash and cash equivalents | $45.8M | $30.8M | |||
| Accounts receivable due from SPN - related party | $360.0K | $2.1M | |||
| Accounts receivable | $157.0K | $0 | |||
| Prepaid expenses and other current assets | $3.1M | $5.8M | |||
| Total current assets | $49.4M | $38.7M | |||
| Property and equipment, net | $7.6M | $11.5M | |||
| Operating lease assets | $72.5M | $80.9M | |||
| Restricted cash | $8.7M | $8.7M | |||
| Other non-current assets | $31.0K | $31.0K | |||
| Total assets | $138.2M | $139.8M | |||
| Accounts payable | $1.7M | $4.1M | |||
| Accrued expenses and other current liabilities | $4.0M | $10.7M | |||
| Accrued liabilities due to SPN - related party | $3.3M | $17.8M | |||
| Operating lease liabilities | $10.4M | $8.7M | |||
| Total current liabilities | $19.3M | $41.2M | |||
| Operating lease liabilities, net of current portion | $72.6M | $83.0M | |||
| Other long-term liabilities | $2.1M | $1.8M | |||
| Total liabilities | $94.0M | $126.0M | |||
| Preferred stock, $0.001 par value; 10,000,000 shares authorized at December 31, 2025 and 2024; no shares issued and outstanding at December 31, 2025 and 2024 | $0 | $0 | |||
| Common stock, $0.001 par value; 360,000,000 shares authorized at December 31, 2025 and 2024, respectively; 9,556,446 and 8,650,227 shares issued and outstanding at December 31, 2025 and 2024, respectively | $10.0K | $9.0K | |||
| Additional paid-in capital | $1.0B | $991.9M | |||
| Accumulated deficit | -$972.4M | -$978.1M | |||
| Total stockholders' equity | $44.2M | $13.8M | -$44.9M | $10.8M | |
| Total liabilities and stockholders' equity | $138.2M | $139.8M | |||
| Preferred stock, par value | $0.00 | $0.00 | |||
| Preferred stock, shares authorized | 10.0M shares | 10.0M shares | |||
| Preferred stock, shares issued | 0 shares | 0 shares | |||
| Preferred stock, shares outstanding | 0 shares | 0 shares | |||
| Common stock, par value | $0.00 | $0.00 | |||
| Common stock, shares authorized | 360.0M shares | 360.0M shares | 360.0M shares | ||
| Common stock, shares issued | 9.6M shares | 8.7M shares | |||
| Common stock, shares outstanding | 9.6M shares | 8.7M shares |
| Period ending | 2025-12-31 | 2024-12-31 | 2024-02-29 | 2023-12-31 | 2022-12-31 |
|---|---|---|---|---|---|
| Cash and cash equivalents | $45.8M | $30.8M | |||
| Accounts receivable due from SPN - related party | $360.0K | $2.1M | |||
| Accounts receivable | $157.0K | $0 | |||
| Prepaid expenses and other current assets | $3.1M | $5.8M | |||
| Total current assets | $49.4M | $38.7M | |||
| Property and equipment, net | $7.6M | $11.5M | |||
| Operating lease assets | $72.5M | $80.9M | |||
| Restricted cash | $8.7M | $8.7M | |||
| Other non-current assets | $31.0K | $31.0K | |||
| Total assets | $138.2M | $139.8M | |||
| Accounts payable | $1.7M | $4.1M | |||
| Accrued expenses and other current liabilities | $4.0M | $10.7M | |||
| Accrued liabilities due to SPN - related party | $3.3M | $17.8M | |||
| Operating lease liabilities | $10.4M | $8.7M | |||
| Total current liabilities | $19.3M | $41.2M | |||
| Operating lease liabilities, net of current portion | $72.6M | $83.0M | |||
| Other long-term liabilities | $2.1M | $1.8M | |||
| Total liabilities | $94.0M | $126.0M | |||
| Preferred stock, $0.001 par value; 10,000,000 shares authorized at December 31, 2025 and 2024; no shares issued and outstanding at December 31, 2025 and 2024 | $0 | $0 | |||
| Common stock, $0.001 par value; 360,000,000 shares authorized at December 31, 2025 and 2024, respectively; 9,556,446 and 8,650,227 shares issued and outstanding at December 31, 2025 and 2024, respectively | $10.0K | $9.0K | |||
| Additional paid-in capital | $1.0B | $991.9M | |||
| Accumulated deficit | -$972.4M | -$978.1M | |||
| Total stockholders' equity | $44.2M | $13.8M | -$44.9M | $10.8M | |
| Total liabilities and stockholders' equity | $138.2M | $139.8M | |||
| Preferred stock, par value | $0.00 | $0.00 | |||
| Preferred stock, shares authorized | 10.0M shares | 10.0M shares | |||
| Preferred stock, shares issued | 0 shares | 0 shares | |||
| Preferred stock, shares outstanding | 0 shares | 0 shares | |||
| Common stock, par value | $0.00 | $0.00 | |||
| Common stock, shares authorized | 360.0M shares | 360.0M shares | 360.0M shares | ||
| Common stock, shares issued | 9.6M shares | 8.7M shares | |||
| Common stock, shares outstanding | 9.6M shares | 8.7M shares |
Cash flow is reported year to date, not quarter by quarter, so there are no separate quarterly figures.
Every line of the cash flow as filed: the last 3 fiscal years, latest first.5
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Net Income (Loss) | $5.7M | $136.0K | -$113.7M |
| Stock-based compensation expense | $10.8M | $21.0M | $34.1M |
| Depreciation and amortization expense | $4.1M | $5.5M | $6.2M |
| Non-cash operating lease cost | $8.4M | $9.2M | $8.9M |
| Net (accretion) amortization of (discounts) premiums on investments | $0 | $0 | -$236.0K |
| Gain on sale of VOWST Business, net of transaction costs | $0 | -$146.7M | $0 |
| Amortization of debt issuance costs | $0 | $1.4M | $1.1M |
| Loss associated with extinguishment of debt | $0 | $23.4M | $1.6M |
| (Gain)/loss on disposal of fixed assets | -$192.0K | $317.0K | $0 |
| Impairment of long-lived assets | $0 | $3.3M | $0 |
| Change in fair value of warrant liabilities | $0 | -$546.0K | -$1.6M |
| Collaboration (profit) loss sharing - related party (1) | $0 | $0 | $5.2M |
| Accounts receivable due from SPN - related party | $1.7M | -$2.1M | $0 |
| Prepaid expenses and other current and non-current assets | $2.7M | $987.0K | -$29.1M |
| Accounts receivable | -$157.0K | $0 | $0 |
| Collaboration receivable - related party | $0 | $8.7M | -$8.7M |
| Inventories | $0 | -$33.8M | -$29.6M |
| Deferred income - related party | $0 | -$4.1M | $7.7M |
| Deferred revenue - related party | $0 | $0 | -$1.3M |
| Accounts payable | -$2.4M | -$2.9M | -$11.6M |
| Accrued liabilities due to SPN - related party | -$14.5M | -$15.7M | $0 |
| Operating lease liabilities | -$8.7M | -$6.3M | -$2.2M |
| Accrued expenses and other current and long-term liabilities | -$6.5M | -$10.2M | $15.8M |
| Net cash provided by (used in) operating activities | $1.1M | -$148.6M | -$117.4M |
| Purchases of property and equipment | -$252.0K | -$380.0K | -$8.0M |
| Proceeds from sales of property and equipment | $210.0K | $0 | $0 |
| Purchases of investments | $0 | $0 | -$4.4M |
| Sales and maturities of investments | $0 | $0 | $23.0M |
| Sales of restricted investments | $0 | $1.4M | $0 |
| Proceeds from sale of VOWST Business | $0 | $141.3M | $0 |
| Net cash (used in) provided by investing activities | -$42.0K | $142.3M | $10.6M |
| Proceeds from at the market equity offering, net of issuance costs | $13.2M | $23.5M | $18.2M |
| Proceeds from exercise of stock options | $501.0K | $0 | $877.0K |
| Proceeds from Securities Purchase Agreement - related party | $0 | $13.5M | $0 |
| Issuance of common stock under ESPP | $230.0K | $487.0K | $2.2M |
| Proceeds from issuance of debt, net of issuance costs | $0 | $0 | $103.4M |
| Repayment of notes payable | $0 | -$127.9M | -$52.9M |
| Net cash provided by (used in) financing activities | $13.9M | -$90.4M | $71.7M |
| Net increase (decrease) in cash, cash equivalents and restricted cash | $15.0M | -$96.7M | -$35.1M |
| Effect of exchange rate changes on cash, cash equivalents and restricted cash | $0 | -$1.0K | $2.0K |
| Cash paid for interest | $0 | $10.9M | $12.5M |
| Property and equipment purchases included in accounts payable and accrued expenses | $0 | $0 | $16.0K |
| Lease liability arising from obtaining right-of-use assets | $0 | $0 | $3.0M |
| Prepaid rent reclassified to right-of-use assets | $0 | $0 | $4.6M |
| Recognition of warrant liabilities | $0 | $0 | $2.1M |
| Warrants issued related to prior credit facility with Oaktree and recorded as debt discount | $0 | $0 | $2.8M |
No quarter-by-quarter statement was filed.
Corporate structure
Seres Therapeutics, Inc. sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.
Major holders of Seres Therapeutics, Inc.
- FMR LLC Filed SCHEDULE 13G/A on Seres Therapeutics, Inc., latest Aug 6, 2025 (6 filings since Feb 9, 2022)
- Nestlé Filed SC 13D/A on Seres Therapeutics, Inc., latest Oct 2, 2024
- BlackRock Filed SC 13G/A on Seres Therapeutics, Inc., latest Apr 5, 2024 (6 filings since Feb 3, 2022)
- Janus Henderson Group Ltd. Filed SC 13G/A on Seres Therapeutics, Inc., latest Feb 12, 2024 (3 filings since Feb 11, 2022)
- Federated Hermes Filed SC 13G/A on Seres Therapeutics, Inc., latest Nov 7, 2023 (5 filings since Feb 14, 2022)
- VANGUARD GROUP INC Filed SC 13G/A on Seres Therapeutics, Inc., latest Feb 9, 2023 (2 filings since Feb 10, 2022)
- State Street Corporation Filed SC 13G/A on Seres Therapeutics, Inc., latest Feb 3, 2023 (3 filings since Oct 12, 2021)
- Nestle Health Science US Holdings, Inc. Filed SC 13D/A on Seres Therapeutics, Inc., latest Jul 22, 2022
- Flagship VentureLabs IV, LLC Filed SC 13D/A on Seres Therapeutics, Inc., latest Jul 7, 2022
- Amova Asset Management Americas, Inc. Filed SC 13G/A on Seres Therapeutics, Inc., latest Feb 14, 2022
- RA CAPITAL MANAGEMENT, L.P. Filed SC 13G/A on Seres Therapeutics, Inc., latest Feb 14, 2022
- Sumitomo Mitsui Trust Group Filed SC 13G/A on Seres Therapeutics, Inc., latest Feb 4, 2022
- Seres Therapeutics, Inc. Cambridge, Massachusetts, United States
Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
What it owns
What Seres Therapeutics, Inc. reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.
Property and equipment
| Item | Latest | A year before | Change |
|---|---|---|---|
| Property and equipment, before depreciation | $64.2M5 Dec 31, 2025 | $64.7M5 Dec 31, 2024 | −0.7% |
| Accumulated depreciation | $56.6M5 Dec 31, 2025 | $53.2M5 Dec 31, 2024 | +6.4% |
| Property and equipment, net | $7.6M5 Dec 31, 2025 | $11.5M5 Dec 31, 2024 | −33.8% |
| Operating-lease assets (leased space) | $72.5M5 Dec 31, 2025 | $80.9M5 Dec 31, 2024 | −10.4% |
Investments
| Item | Latest | A year before | Change |
|---|---|---|---|
| Cash and cash equivalents | $45.8M5 Dec 31, 2025 | $30.8M5 Dec 31, 2024 | +48.6% |
Properties, in its own words
Research and Offices
Our corporate headquarters is located in Cambridge, Massachusetts, where we lease approximately 82,714 square feet of office, research, development, warehouse and laboratory space under a lease that expires in March 2033.
The rest of Item 2
Clinical Manufacturing
We currently conduct our manufacturing operations in our leased facilities in Cambridge, Massachusetts, where we conduct process development, scale-up activities, the manufacture of active components for our biotherapeutic candidates, and quality control testing. We believe our current laboratory facilities and contract relationships are sufficient to meet our current bioprocess development and manufacturing needs. Product candidates may be brought into the facilities for economies of operation, or may remain external with contract manufacturing organizations, depending on business dynamics and development needs.
We plan to control the production of all products under current good manufacturing practices by making strategic investments in manufacturing, which may include collaborations with third parties, the design and renovation of existing facilities and the construction of additional new facilities for commercial supply.
Item 2 of the 10-K filed Mar 12, 2026.4
Leadership
Who has led Seres Therapeutics, Inc., and when. Pick a name to see everywhere that person has worked.
Chief executive
Chief financial officer
- Chief executive officerEric D. Shaff Jan 28, 2020 to now15
- Chief executive officerRoger Pomerantz Jun 25, 2015 to Sep 11, 201816
- PresidentEric D. Shaff Jan 28, 2020 to now15
- PresidentRoger Pomerantz Jun 25, 2015 to Sep 11, 201816
- Chief financial officerDavid Arkowitz Jun 1, 2021 to Feb 16, 202417
- Chief financial officerEric D. Shaff Jun 25, 2015 to Jan 31, 202018
Board members and other officers (35)
- OfficerRichard N. Kender Mar 6, 2026 to now19
- OfficerKelly Brady Mar 11, 2026 to now20
- OfficerMarella Thorell Mar 27, 2024 to now21
- OfficerDavid Arkowitz Feb 8, 2022 to Feb 8, 202222
- OfficerPaula Cloghessy Feb 8, 2022 to Oct 31, 202323
- OfficerMoltke Lisa Von Apr 7, 2020 to now24
- OfficerTeresa L. Young Jul 1, 2020 to now25
- OfficerDavid S. Ege Oct 21, 2020 to Aug 19, 202426
- Chief Scientific OfficerMatthew R. Henn Feb 11, 2019 to now27
- OfficerMarcus Chapman Apr 24, 2019 to Feb 8, 202128
- OfficerEric D. Shaff Jan 30, 2018 to Jan 29, 201929
- Chief Medical Officer and EVPKevin Horgan Oct 24, 2018 to Jan 29, 201930
- EVP & Chief Commercial OfficerWael Hashad Jan 6, 2016 to Jan 27, 201731
- OfficerThomas Desrosier May 17, 2016 to now32
- CSO and EVP of R&DDavid N. Cook Jun 25, 2015 to Jan 29, 201933
- CTO and EVP of Bioprocess Dev.John G. Aunins Jun 25, 2015 to Jan 31, 202034
- Chief Medical Officer and EVPMichele Trucksis Jun 25, 2015 to Jan 30, 201835
- Board memberHans-Juergen Woerle Feb 6, 2025 to Feb 6, 202536
- Board memberRobert L. Rosiello Aug 6, 2025 to now37
- Board memberClaire Fraser Jan 5, 2023 to now38
- Board memberEric D. Shaff Feb 8, 2021 to now39
- Board memberPaul Biondi Mar 23, 2020 to now40
- Board memberStephen Berenson Aug 6, 2019 to now41
- Board memberMeryl Zausner Sep 4, 2018 to Jul 6, 202242
- Board memberWillard H. Dere Jul 10, 2017 to now43
- Board memberDennis A. Ausiello Jun 25, 2015 to now44
- Board memberGregory Behar Jun 25, 2015 to Jun 23, 202345
- Board memberLorence Kim Jun 25, 2015 to Jun 14, 201946
- Board memberNoubar Afeyan Jun 25, 2015 to Jun 20, 201947
- Board memberPeter Barton Hutt Jun 25, 2015 to Jun 17, 201648
- Board memberRichard N. Kender Jun 25, 2015 to now49
- Board memberRoger Pomerantz Jun 25, 2015 to Jun 14, 201916
- Board memberWerner Cautreels Jun 25, 2015 to Jun 29, 201550
- Board memberKurt Graves Nov 10, 2015 to now51
- General counselThomas Desrosier Jan 27, 2017 to now52
Former names
- Seres Health, Inc.Jun 9, 2014 to May 14, 20153
Timeline
- Aug 5, 20268-K Results of operations53
- Aug 4, 20268-K Entered a material agreement; Ended a material agreement54
- Jul 8, 20268-K Regulation FD disclosure; Other events55
- Jul 8, 20268-K Executive or director change; Shareholder vote56
- Jun 5, 20268-K Entered a material agreement; Regulation FD disclosure57
- Jun 1, 20268-K Executive or director change58
- May 5, 20268-K Results of operations59
- Mar 16, 20268-K Other events60
- Mar 12, 20268-K Results of operations; Regulation FD disclosure61
- Mar 2, 20268-K Executive or director change62
- Nov 5, 20258-K Results of operations; Regulation FD disclosure63
- Oct 3, 20258-K Other events64
- Jan 28, 2020New chief executive Eric D. Shaff becomes CEO15
- Jun 25, 2015New chief executive Roger Pomerantz becomes CEO16
- Oct 18, 2010Founded Seres Therapeutics, Inc. is founded2
Calendar
Coming up
- Nov 4, 2026Reports results for the quarter ending Sep/2026 A year earlier it reported $0.94 a share, on Nov 5, 2025.65
When it reported results
- Aug 5, 2026Reported quarterly or annual results53
- May 5, 2026Reported quarterly or annual results59
- Mar 12, 2026Reported quarterly or annual results61
- Nov 5, 2025Reported quarterly or annual results63
- Aug 6, 2025Reported quarterly or annual results66
- May 7, 2025Reported quarterly or annual results67
- Mar 13, 2025Reported quarterly or annual results68
- Jan 10, 2025Reported quarterly or annual results69
Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar
Filings
339 filings to the SEC since October 2021: 5 annual reports, 15 quarterly reports, 60 major events, 179 insider forms, 31 large holders, 49 other. The latest 20:
- Aug 21, 2026EFFECT EDGAR
- Aug 18, 20264 EDGAR
- Aug 18, 20264 EDGAR
- Aug 18, 20264 EDGAR
- Aug 18, 20264 EDGAR
- Aug 13, 2026S-3 EDGAR
- Aug 5, 202610-Q EDGAR
- Aug 5, 20268-K EDGAR
- Aug 4, 20268-K EDGAR
- Aug 4, 2026424B5 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
- Jul 10, 20264 EDGAR
The 339 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last five years, summarized. The full record is on SEC EDGAR.
Insider trades
70 open-market trades by officers, directors and large owners since October 2021: 1 buys and 69 sales. Grants, option exercises and gifts are left out.
| Date | Who | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Aug 17, 2026 | Brady KellySee Remarks | Sale | 64 | $4.55 | $291 | Form 4 |
| Aug 17, 2026 | Shaff Eric D.Director | Sale | 263 | $4.55 | $1.2K | Form 4 |
| Aug 17, 2026 | Henn Matthew RSee Remarks | Sale | 81 | $4.55 | $369 | Form 4 |
| Aug 17, 2026 | DesRosier ThomasSee Remarks | Sale | 82 | $4.55 | $373 | Form 4 |
| May 18, 2026 | Shaff Eric D.Director | Sale | 259 | $7.53 | $1.9K | Form 4 |
| May 18, 2026 | Brady KellySee Remarks | Sale | 59 | $7.53 | $444 | Form 4 |
| May 18, 2026 | DesRosier ThomasSee Remarks | Sale | 79 | $7.53 | $595 | Form 4 |
| May 18, 2026 | Henn Matthew RSee Remarks | Sale | 77 | $7.53 | $580 | Form 4 |
| Feb 15, 2026 | Young Teresa L.See Remarks | Sale | 75 | $8.47 | $635 | Form 4 |
| Feb 15, 2026 | Shaff Eric D.Director | Sale | 259 | $8.47 | $2.2K | Form 4 |
| Feb 15, 2026 | DesRosier ThomasSee Remarks | Sale | 78 | $8.47 | $661 | Form 4 |
| Feb 15, 2026 | Henn Matthew RSee Remarks | Sale | 89 | $8.47 | $754 | Form 4 |
| Nov 15, 2025 | DesRosier ThomasSee Remarks | Sale | 76 | $17.30 | $1.3K | Form 4 |
| Nov 15, 2025 | Young Teresa L.See Remarks | Sale | 1,042 | $17.30 | $18.0K | Form 4 |
| Nov 15, 2025 | Shaff Eric D.Director | Sale | 217 | $17.30 | $3.8K | Form 4 |
| Nov 15, 2025 | Henn Matthew RSee Remarks | Sale | 1,257 | $17.30 | $21.7K | Form 4 |
| Aug 18, 2025 | DesRosier ThomasSee Remarks | Sale | 76 | $16.65 | $1.3K | Form 4 |
| Aug 18, 2025 | Young Teresa L.See Remarks | Sale | 59 | $16.65 | $982 | Form 4 |
| Aug 18, 2025 | Shaff Eric D.Director | Sale | 217 | $16.65 | $3.6K | Form 4 |
| Aug 18, 2025 | Henn Matthew RSee Remarks | Sale | 73 | $16.65 | $1.2K | Form 4 |
All 70 trades can be filtered by person here when JavaScript is on.
From Forms 4 filed with the SEC.
Major holders
Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.
- FMR LLCSCHEDULE 13G/A, 6 filings Feb 9, 2022 to Aug 6, 202570
- NestléSC 13D/A, 1 filing Oct 2, 202471
- BlackRockSC 13G/A, 6 filings Feb 3, 2022 to Apr 5, 202472
- Janus Henderson Group Ltd.SC 13G/A, 3 filings Feb 11, 2022 to Feb 12, 202473
- Federated HermesSC 13G/A, 5 filings Feb 14, 2022 to Nov 7, 202374
- VANGUARD GROUP INCSC 13G/A, 2 filings Feb 10, 2022 to Feb 9, 202375
- State Street CorporationSC 13G/A, 3 filings Oct 12, 2021 to Feb 3, 202376
- Nestle Health Science US Holdings, Inc.SC 13D/A, 1 filing Jul 22, 202277
- Flagship VentureLabs IV, LLCSC 13D/A, 1 filing Jul 7, 202278
- Amova Asset Management Americas, Inc.SC 13G/A, 1 filing Feb 14, 202279
- RA CAPITAL MANAGEMENT, L.P.SC 13G/A, 1 filing Feb 14, 202280
- Sumitomo Mitsui Trust GroupSC 13G/A, 1 filing Feb 4, 202281
Executive pay
What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.
| Year | Executive | Age | Salary | Total pay |
|---|---|---|---|---|
| 2025 | Eric D. Shaff | 50 | $408.3K | $1.8M82 |
| 2025 | Thomas J. DesRosier | 71 | $512.9K | $1.1M82 |
| 2025 | Marella Thorell | 59 | $494.4K | $1.1M82 |
| 2025 | Teresa L. YoungPh.D. | $489.3K | $1.0M82 | |
| 2025 | Matthew HennPh.D. | $489.3K | $1.0M82 | |
| 2024 | Former President and Chief Executive Officer | $685.0K | $2.7M82 | |
| 2024 | Former Co-President and Co-Chief Executive Officer and current Executive Vice President and Chief Legal Officer | $498.0K | $1.2M82 |
Held by these funds
The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 36. Change is in shares since the quarter before.
| Fund | Shares | Value | Share of the fund | Change |
|---|---|---|---|---|
| Flagship Pioneering, LLC | 1,155,850 | $9.1M | 0.6% | No change |
| Vanguard Capital Management LLC | 287,776 | $2.3M | 0.0% | −6,367 |
| Marshall Wace, Llp | 172,245 | $1.4M | 0.0% | +32,706 |
| Vontobel Holding Ltd. | 122,975 | $970.3K | 0.0% | −15,493 |
| BlackRock, Inc. | 111,000 | $875.8K | 0.0% | +8,974 |
| Geode Capital Management, LLC | 79,974 | $631.3K | 0.0% | +5,139 |
| Susquehanna International Group, Llp | 58,328 | $460.2K | 0.0% | −47,011 |
| Vanguard Fiduciary Trust Co | 48,685 | $384.1K | 0.0% | +9,042 |
| State Street Corp | 33,901 | $267.5K | 0.0% | No change |
| Lion Point Capital, LP | 31,570 | $249.1K | 1.2% | No change |
| Charles Schwab Investment Management Inc | 31,049 | $245.0K | 0.0% | −581 |
| American Century Companies Inc | 28,313 | $223.4K | 0.0% | −34,003 |
| XTX Topco Ltd | 20,732 | $163.6K | 0.0% | New |
| Goldman Sachs Group Inc | 15,229 | $120.2K | 0.0% | New |
| Northern Trust Corp | 14,765 | $116.5K | 0.0% | No change |
| Invesco Ltd. | 12,974 | $102.4K | 0.0% | −1,573 |
| Morgan Stanley | 12,138 | $95.8K | 0.0% | −9,562 |
| Citadel Advisors LLC | 10,504 | $82.9K | 0.0% | New |
| Simplex Trading, LLC | 4,598 | $36.3K | 0.0% | +1,528 |
| SBI Securities Co., Ltd. | 4,182 | $33.0K | 0.0% | +700 |
| Integrated Wealth Concepts LLC | 4,000 | $31.6K | 0.0% | New |
| Group One Trading LLC | 3,714 | $29.3K | 0.0% | +2,890 |
| Jpmorgan Chase & Co | 3,636 | $28.3K | 0.0% | New |
| Vanguard Global Advisers, LLC | 1,975 | $15.6K | 0.0% | No change |
| Fmr LLC | 1,528 | $12.1K | 0.0% | −224 |
13F reports cover disclosed long positions in U.S. stocks only.
SEC filer profile
How Seres Therapeutics, Inc. is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.
- Name on EDGARSeres Therapeutics, Inc.1
- CIK0001609809
- Employer ID (EIN)27-43262904
- Filer statusAccelerated filer not an emerging growth company; a smaller reporting company; not a shell company4
- Incorporated inDelaware4
- Fiscal year endsDecember 311
- Industry code (SIC)2834 Pharmaceutical Preparations1
- SEC reviewing officeOffice of Life Sciences, Division of Corporation Finance1
- Business address200 Sidney Street, Cambridge, MA 021391
- Phone617 945 96261
- Shares outstanding9,941,261 as of Aug 3, 202612
- Public float$71.9M as of Jun 30, 20254
- AuditorPricewaterhouseCoopers LLP, Boston, Massachusetts PCAOB ID 238; no auditor attestation of internal control over financial reporting4
- On EDGAR sinceJun 9, 20141
- Filings721 in all: 4 (337), 8-K (120), SC 13G/A (39), 3 (36), 10-Q (34), DEFA14A (19), SC 13G (15), S-8 (13)1
All 40 form types
10-K (11), DEF 14A (11), 424B5 (10), UPLOAD (10), CORRESP (9), EFFECT (7), S-3 (5), SC 13D/A (5), D (3), DRS/A (3), FWP (3), PRE 14A (3), SCHEDULE 13G/A (3), 144 (2), 4/A (2), CT ORDER (2), POS AM (2), S-1/A (2), SC 13D (2), 3/A (1), 424B3 (1), 424B4 (1), 8-A12B (1), CERTNAS (1), DEFM14A (1), DRS (1), POSASR (1), PREM14A (1), S-1 (1), S-1MEF (1), S-3ASR (1), S-8 POS (1)
- Latest filingsAnnual report (10-K) Mar 12, 2026
Quarterly report (10-Q) Aug 5, 2026
Proxy statement (DEF 14A) Apr 27, 2026
Latest 8-K (8-K) Aug 5, 2026
Securities registered for trading
| Class | Symbol | Exchange |
|---|---|---|
| Common stock, par value $0.001 per share | MCRB | The Nasdaq Global Select Market |
From the cover page of the 10-K filed Mar 12, 2026 (Section 12(b) of the Exchange Act).4
Risk factors and legal proceedings
The risks Seres Therapeutics, Inc. names in Item 1A of its 10-K filed Mar 12, 2026: 67 risks under these headings, as written.4
- Risks Related to Our Financial Position and Need for Additional Capital
- We have identified conditions and events that raise substantial doubt regarding our ability to continue as a going concern.
- We are a clinical-stage company and have incurred significant losses since our inception. We expect to incur losses for the foreseeable future and may never achieve or maintain profitability.
- Our limited operating history may make it difficult to evaluate the success of our business to date and to assess our future viability.
- The total amount of the Milestone Payments we may receive from the Transaction is subject to various risks and uncertainties.
- We may not be able to realize the anticipated benefits of the Transaction, and we may face new challenges as a smaller, less diversified company.
- We have broad discretion as to the use of the proceeds from the Transaction, and may not use the proceeds effectively.
- Risks Related to the Discovery, Development and Regulatory Approval of Our Product Candidates
- We are early in our development efforts of our product candidates and may not be successful in our efforts to use our reverse translational platform to build a pipeline of product candidates and develop additional marketable drugs.
- Our product candidates are based on live biotherapeutics, which is a novel approach to therapeutic intervention.
- Clinical drug development involves a risky, lengthy and expensive process, with an uncertain outcome. We may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and potential future commercialization of our product candidates.
- Delays or difficulties in the enrollment of patients in clinical trials, could result in our receipt of necessary regulatory approvals being delayed or prevented.
The other 56 risks
- Interim “top-line” and preliminary data from our clinical trials that we announce or publish from time to time may change as more patient data become available and are subject to audit and verification procedures that could result in material changes in the final data.
- If we are not able to obtain, or if there are delays in obtaining, required regulatory approvals, we or any collaborators will not be able to commercialize our product candidates or will not be able to do so as soon as anticipated, and our ability to generate revenue will be materially impaired.
- A Fast Track designation by the FDA may not actually lead to a faster development or regulatory review or approval process.
- A Breakthrough Therapy, or other similar designations by the FDA for our product candidates may not lead to a faster development, regulatory review or approval process, and it does not increase the likelihood that our product candidates will receive marketing approval.
- We may seek PRIME designation by EMA or other designations, schemes or tools in the EU for one or more of our product candidates, which we may not receive. Such designations may not lead to a faster development or regulatory review or approval process and do not increase the likelihood that our product candidates will receive marketing authorization.
- We may seek orphan drug designation for some of our product candidates but may not be able to obtain it.
- Disruptions at the FDA and other government agencies caused by funding shortages, staffing limitations or policy changes could hinder their ability to hire, retain or deploy key leadership and other personnel, or otherwise prevent new or modified products from being developed, approved or commercialized in a timely manner or at all, which could negatively impact our business.
- Risks Related to our Dependence on Third Parties and Manufacturing
- We rely, and expect to continue to rely, on third parties to conduct our clinical trials, and those third parties may not perform satisfactorily, including failing to meet deadlines for the completion of such trials.
- We rely on third parties for certain aspects of the manufacture of our product candidates, and we expect to continue to do so for the foreseeable future. This reliance on third parties increases the risk that we will not have sufficient quantities of our product candidates or that such quantities may not be available at an acceptable cost, which could delay, prevent or impair our development or potential future commercialization efforts.
- Evaluation of our product candidates in investigator-sponsored clinical trials (ISTs) may expose us to additional risks that could impair the development of our product candidates.
- We have limited experience manufacturing our product candidates commercially, and we cannot assure you that we can manufacture our product candidates in compliance with regulations at a cost or in quantities necessary to make them commercially viable.
- Risks Related to Our Product Candidates and Other Legal Matters
- Our product candidates may fail to achieve the degree of market acceptance by physicians, patients, hospitals, third-party payors and others in the medical community necessary for commercial success.
- If we are unable to establish effective sales, marketing and distribution capabilities or enter into agreements with third parties with such capabilities, we may not be successful in commercializing any of our product candidates if and when they are approved.
- We face substantial competition, which may result in others discovering, developing or commercializing competing products before or more successfully than we do.
- Even if we are able to commercialize any of our product candidates, if approved, the products may become subject to unfavorable pricing regulations or third-party coverage and reimbursement policies, any of which would harm our business.
- Product liability lawsuits against us could cause us to incur substantial liabilities and limit commercialization of any products that we may develop.
- We may face competition from biosimilars, which may have a material adverse impact on the future commercial prospects of our product candidates.
- Failure to obtain marketing approval in international jurisdictions would prevent our product candidates from being marketed abroad.
- Any product candidate for which we obtain marketing approval will remain subject to significant post-marketing regulatory requirements and oversight.
- The FDA and other regulatory authorities actively enforce the laws and regulations prohibiting the promotion of off-label uses.
- Our relationships and any collaborators' relationships with customers, physicians and third-party payors are and will be subject to applicable anti-kickback, fraud and abuse and other healthcare laws and regulations, which could expose us or any collaborators to criminal sanctions, civil penalties, exclusion from governmental healthcare programs, contractual damages, reputational harm and diminished profits and future earnings.
- Current and future legislation or regulation may increase the difficulty and cost for us to obtain marketing approval of and commercialize our product candidates and may adversely affect the prices we may obtain.
- Governments outside the United States tend to impose strict price controls, which may adversely affect our revenues, if any.
- Risks Related to Our Intellectual Property
- If we are unable to adequately protect our proprietary technology or obtain and maintain issued patents that are sufficient to protect our product candidates, others could compete against us more directly, which would have a material adverse impact on our business, results of operations, financial condition and prospects.
- If we are unable to protect the confidentiality of our trade secrets and know-how, our business and competitive position may be harmed.
- Changes in U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our product candidates.
- Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights, the outcome of which would be uncertain and could have a material adverse effect on the success of our business.
- Issued patents covering our product candidates could be found invalid or unenforceable or could be interpreted narrowly if challenged in court.
- Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for noncompliance with these requirements.
- We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property.
- We may be subject to claims by third parties asserting that our employees or we have misappropriated their intellectual property, or claiming ownership of what we regard as our own intellectual property.
- If our trademarks and trade names are not adequately protected, then we may not be able to build name recognition in our markets of interest and our business may be adversely affected.
- We will not seek to protect our intellectual property rights in all jurisdictions throughout the world and we may not be able to adequately enforce our intellectual property rights even in the jurisdictions where we seek protection.
- Risks Related to Our Operations
- Our future success depends on our ability to retain key executives and to attract, retain and motivate qualified personnel.
- A variety of risks associated with operating internationally could materially adversely affect our business.
- We have significant excess leased space that may adversely affect our financial condition and results of operations.
- Our business and operations may suffer in the event of information technology system failures, cyberattacks or deficiencies in our cybersecurity.
- Actual or perceived failures to comply with applicable data protection, privacy and security laws, regulations, standards and other requirements could adversely affect our business, results of operations, and financial condition.
- Our business may be affected by the evolving regulatory framework for AI Technologies.
- Acquisitions, dispositions, joint ventures, or other strategic alternatives could disrupt our business, cause dilution to our stockholders and otherwise harm our business.
- We have in the past been subject to securities class action litigation and may be subject to similar or other litigation in the future, which may harm our business.
- We are subject to complex and changing laws and regulations, which exposes us to potential liabilities, increased costs and other adverse effects on our business.
- If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could harm our business.
- Our ability to use our net operating loss carryforwards and research and development credits to offset future taxable income or income tax liabilities, respectively, may be subject to certain limitations.
- Risks Related to Our Common Stock
- We have in the past and may again in the future receive a notice of the failure to satisfy a continued listing rule from Nasdaq.
- Our executive officers, directors and principal stockholders, if they choose to act together, have the ability to significantly influence all matters submitted to stockholders for approval.
- A significant portion of our total outstanding shares are eligible to be sold into the market, which could cause the market price of our common stock to drop significantly, even if our business is doing well.
- We are a “smaller reporting company,” and the reduced disclosure requirements applicable to smaller reporting companies may make our common stock less attractive to investors.
- Provisions in our restated certificate of incorporation and amended and restated bylaws and under Delaware law could make an acquisition of our company, which may be beneficial to our stockholders, more difficult and may prevent attempts by our stockholders to replace or remove our current management.
- Our certificate of incorporation designates the Court of Chancery of the State of Delaware, subject to certain exceptions, as the sole and exclusive forum for certain types of actions and proceedings that may be initiated by our stockholders and our bylaws designate the federal district courts of the United States as the exclusive forum for actions arising under the Securities Act of 1933, as amended, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.
- Because we do not anticipate paying any cash dividends on our capital stock in the foreseeable future, capital appreciation, if any, will be the sole source of gain for our stockholders.
- General Risk Factors
- The price of our common stock may be volatile and fluctuate substantially, which could result in substantial losses for purchasers of our common stock.
- If securities or industry analysts issue an adverse or misleading opinion regarding our business, our common stock price and trading volume could decline.
- We will continue to incur costs as a result of being a public company, and our management will continue to devote substantial time to compliance initiatives and corporate governance practices.
- If we fail to maintain an effective system of internal control over financial reporting, we may not be able to accurately report our financial results or prevent fraud. As a result, stockholders could lose confidence in our financial and other public reporting, which would harm our business and the trading price of our common stock.
- Failure to keep up with evolving and conflicting laws, regulations, trends and stakeholder expectations relating to environmental, social and governance, or ESG, practices or reporting could adversely impact our reputation, share price and access to and cost of capital or otherwise adversely impact our business.
Sources
The numbers on this page point here. Each one links to the record it came from.
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- 19SEC EDGARRichard N. Kender, Officer
- 20SEC EDGARKelly Brady, Officer
- 21SEC EDGARMarella Thorell, Officer
- 22SEC EDGARDavid Arkowitz, Officer
- 23SEC EDGARPaula Cloghessy, Officer
- 24SEC EDGARMoltke Lisa Von, Officer
- 25SEC EDGARTeresa L. Young, Officer
- 26SEC EDGARDavid S. Ege, Officer
- 27
- 28SEC EDGARMarcus Chapman, Officer
- 29SEC EDGAREric D. Shaff, Officer
- 30
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- 32SEC EDGARThomas Desrosier, Officer
- 33SEC EDGARDavid N. Cook, CSO and EVP of R&D
- 34
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- 36SEC EDGARHans-Juergen Woerle, Board member
- 37SEC EDGARRobert L. Rosiello, Board member
- 38SEC EDGARClaire Fraser, Board member
- 39SEC EDGAREric D. Shaff, Board member
- 40SEC EDGARPaul Biondi, Board member
- 41SEC EDGARStephen Berenson, Board member
- 42SEC EDGARMeryl Zausner, Board member
- 43SEC EDGARWillard H. Dere, Board member
- 44SEC EDGARDennis A. Ausiello, Board member
- 45SEC EDGARGregory Behar, Board member
- 46SEC EDGARLorence Kim, Board member
- 47SEC EDGARNoubar Afeyan, Board member
- 48SEC EDGARPeter Barton Hutt, Board member
- 49SEC EDGARRichard N. Kender, Board member
- 50SEC EDGARWerner Cautreels, Board member
- 51SEC EDGARKurt Graves, Board member
- 52SEC EDGARThomas Desrosier, General counsel
- 53SEC EDGARResults of operations
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- 58SEC EDGARExecutive or director change
- 59SEC EDGARResults of operations
- 60SEC EDGAROther events
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- 62SEC EDGARExecutive or director change
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- 64SEC EDGAROther events
- 65NasdaqNasdaq calendar
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