HOWL on Nasdaq
Werewolf Therapeutics, Inc.
In its 2026 annual report the company says: “We are an innovative biopharmaceutical company pioneering the development of therapeutics engineered to stimulate the body’s immune system for the treatment of cancer and other immune-mediated conditions. We are leveraging our proprietary PREDATOR platform to design conditionally activated molecules that stimulate both adaptive and innate immunity with the goal of addressing the limitations of conventional proinflammatory immune therapies.”3 It is headquartered in Waltham, Massachusetts.1 Its shares trade on Nasdaq under the symbol HOWL.1
Price unavailable
Last updated Oct 21, 2026.
Overview
- TickerHOWL on Nasdaq1
- IndustryPharmaceutical Preparations1
- HeadquartersWaltham, Massachusetts1
- Incorporated inDE2
- Business address303 Wyman Street, Suite 300, Waltham, Ma 024512
- Filer categoryNon-accelerated filer, Smaller reporting company, Emerging growth company2
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We are an innovative biopharmaceutical company pioneering the development of therapeutics engineered to stimulate the body’s immune system for the treatment of cancer and other immune-mediated conditions. We are leveraging our proprietary PREDATOR platform to design conditionally activated molecules that stimulate both adaptive and innate immunity with the goal of addressing the limitations of conventional proinflammatory immune therapies. Our molecules, which we refer to as INDUKINE and INDUCER molecules, are intended to activate selectively in the tumor microenvironment, or TME. Our most advanced product candidates, WTX-124 and WTX-330, are systemically delivered, conditionally activated Interleukin-2 (IL-2) and Interleukin-12 (IL-12), respectively, INDUKINE molecules for the treatment of multiple tumor types.3 From its latest annual report
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Financial statements
Every line of the income statement as filed: the last 2 fiscal years, latest first.8
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Collaboration revenue | $0 | $1.9M |
| Research and development | $44.8M | $56.4M |
| General and administrative | $15.8M | $19.0M |
| Total operating expenses | $60.7M | $75.5M |
| Operating loss | -$60.7M | -$73.6M |
| Interest income | $3.1M | $6.7M |
| Interest expense | -$5.3M | -$4.7M |
| Loss on extinguishment of debt | $0 | -$553.0K |
| Other income, net | $2.0M | $1.6M |
| Total other (expense) income | -$145.0K | $3.1M |
| Net loss | -$60.8M | -$70.5M |
| Net loss per common share, basic (in usd per share) | -$1.32 | -$1.63 |
| Net loss per common share, diluted (in usd per share) | -$1.33 | -$1.63 |
| Weighted average common shares outstanding, basic (in shares) | 46.0M shares | 43.3M shares |
| Weighted average common shares outstanding, diluted (in shares) | 46.8M shares | 43.9M shares |
No quarter-by-quarter statement was filed.
Every line of the balance sheet as filed: the last 3 fiscal years (annual) or 3 quarters (quarterly), latest first.8
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Cash and cash equivalents | $57.0M | $111.0M | |
| Prepaid expenses and other current assets | $1.5M | $2.1M | |
| Total current assets | $58.6M | $113.1M | |
| Property and equipment, net | $4.7M | $6.3M | |
| Restricted cash and cash equivalents | $901.0K | $1.2M | |
| Operating lease right of use asset | $5.2M | $6.0M | |
| Other assets | $5.0K | $320.0K | |
| Total assets | $69.4M | $126.9M | |
| Accounts payable | $754.0K | $3.0M | |
| Accrued expenses and other current liabilities | $5.4M | $10.6M | |
| Operating lease liability, current | $1.8M | $1.6M | |
| Note payable, current, net of discount and issuance costs | $28.2M | $0 | |
| Total current liabilities | $36.1M | $15.2M | |
| Operating lease liability, net of current portion | $7.7M | $9.4M | |
| Note payable, net of discount, issuance costs, and current portion | $0 | $26.1M | |
| Derivative liability | $759.0K | $2.8M | |
| Total liabilities | $44.6M | $53.5M | |
| Preferred stock, $0.0001 par value, 5,000,000 shares authorized as of December 31, 2025 and 2024; no shares issued or outstanding as of December 31, 2025 and 2024 | $0 | $0 | |
| Common stock, $0.0001 par value, 200,000,000 shares authorized as of December 31, 2025 and 2024; 48,596,817 and 44,827,159 shares issued and outstanding as of December 31, 2025 and 2024, respectively | $5.0K | $5.0K | |
| Additional paid-in capital | $500.2M | $488.0M | |
| Accumulated deficit | -$475.4M | -$414.6M | |
| Total stockholders equity | $24.8M | $73.4M | $111.4M |
| Total liabilities and stockholders equity | $69.4M | $126.9M | |
| Common stock outstanding (in shares) | 48.6M shares | 44.8M shares | |
| Preferred stock par value (in usd per share) | $0.00 | $0.00 | |
| Preferred stock authorized (in shares) | 5.0M shares | 5.0M shares | |
| Preferred stock issued (in shares) | 0 shares | 0 shares | |
| Preferred stock outstanding (in shares) | 0 shares | 0 shares | |
| Common stock par value (in usd per share) | $0.00 | $0.00 | |
| Common stock authorized (in shares) | 200.0M shares | 200.0M shares | |
| Common stock issued (in shares) | 48.6M shares | 44.8M shares |
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Cash and cash equivalents | $57.0M | $111.0M | |
| Prepaid expenses and other current assets | $1.5M | $2.1M | |
| Total current assets | $58.6M | $113.1M | |
| Property and equipment, net | $4.7M | $6.3M | |
| Restricted cash and cash equivalents | $901.0K | $1.2M | |
| Operating lease right of use asset | $5.2M | $6.0M | |
| Other assets | $5.0K | $320.0K | |
| Total assets | $69.4M | $126.9M | |
| Accounts payable | $754.0K | $3.0M | |
| Accrued expenses and other current liabilities | $5.4M | $10.6M | |
| Operating lease liability, current | $1.8M | $1.6M | |
| Note payable, current, net of discount and issuance costs | $28.2M | $0 | |
| Total current liabilities | $36.1M | $15.2M | |
| Operating lease liability, net of current portion | $7.7M | $9.4M | |
| Note payable, net of discount, issuance costs, and current portion | $0 | $26.1M | |
| Derivative liability | $759.0K | $2.8M | |
| Total liabilities | $44.6M | $53.5M | |
| Preferred stock, $0.0001 par value, 5,000,000 shares authorized as of December 31, 2025 and 2024; no shares issued or outstanding as of December 31, 2025 and 2024 | $0 | $0 | |
| Common stock, $0.0001 par value, 200,000,000 shares authorized as of December 31, 2025 and 2024; 48,596,817 and 44,827,159 shares issued and outstanding as of December 31, 2025 and 2024, respectively | $5.0K | $5.0K | |
| Additional paid-in capital | $500.2M | $488.0M | |
| Accumulated deficit | -$475.4M | -$414.6M | |
| Total stockholders equity | $24.8M | $73.4M | $111.4M |
| Total liabilities and stockholders equity | $69.4M | $126.9M | |
| Common stock outstanding (in shares) | 48.6M shares | 44.8M shares | |
| Preferred stock par value (in usd per share) | $0.00 | $0.00 | |
| Preferred stock authorized (in shares) | 5.0M shares | 5.0M shares | |
| Preferred stock issued (in shares) | 0 shares | 0 shares | |
| Preferred stock outstanding (in shares) | 0 shares | 0 shares | |
| Common stock par value (in usd per share) | $0.00 | $0.00 | |
| Common stock authorized (in shares) | 200.0M shares | 200.0M shares | |
| Common stock issued (in shares) | 48.6M shares | 44.8M 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 2 fiscal years, latest first.8
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Net loss | -$60.8M | -$70.5M |
| Stock-based compensation expense | $6.2M | $8.8M |
| Depreciation expense | $1.6M | $1.8M |
| Non-cash interest expense | $2.1M | $1.3M |
| Non-cash lease expense | $785.0K | $887.0K |
| Loss on extinguishment of debt | $0 | $553.0K |
| Change in fair value of derivative liability | -$2.1M | -$1.6M |
| Prepaid expenses and other assets | $850.0K | $669.0K |
| Other receivables | $0 | $1.4M |
| Accounts payable, accrued expenses and other liabilities | -$7.5M | $3.5M |
| Deferred revenue | $0 | -$1.3M |
| Operating lease liability | -$1.6M | -$1.6M |
| Net cash used in operating activities | -$60.3M | -$56.2M |
| Purchases of property and equipment | $0 | -$254.0K |
| Net cash used in investing activities | $0 | -$254.0K |
| Proceeds from at the market offering of common stock, net of issuance costs | $5.9M | $23.6M |
| Proceeds from drawdown of term loans | $0 | $30.0M |
| Payment of debt issuance costs | $0 | -$673.0K |
| Repayment of term loan | $0 | -$40.0M |
| Proceeds from issuances under Employee Stock Purchase Plan | $89.0K | $142.0K |
| Proceeds from stock option exercises | $0 | $35.0K |
| Net cash provided by financing activities | $6.0M | $13.1M |
| Net decrease in cash, cash equivalents and restricted cash and cash equivalents | -$54.3M | -$43.4M |
| Cash paid for interest | $3.1M | $3.4M |
| Issuance costs in accounts payable and accrued expenses | $120.0K | $84.0K |
| Fair value of derivative liability issued with term loan | $0 | $4.5M |
No quarter-by-quarter statement was filed.
Corporate structure
Werewolf 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 Werewolf Therapeutics, Inc.
- Peter Moll Filed SCHEDULE 13G on Werewolf Therapeutics, Inc., latest Sep 21, 2026
- RA CAPITAL MANAGEMENT, L.P. Filed SCHEDULE 13D/A on Werewolf Therapeutics, Inc., latest Jul 2, 2026 (11 filings since Aug 12, 2022)
- MPM BioVentures 2014, L.P. Filed SCHEDULE 13D/A on Werewolf Therapeutics, Inc., latest May 12, 2026 (7 filings since Nov 4, 2025)
- Longwood Fund III, L.P. Filed SCHEDULE 13G/A on Werewolf Therapeutics, Inc., latest Feb 11, 2026
- PFM Health Sciences, LP Filed SCHEDULE 13G/A on Werewolf Therapeutics, Inc., latest Aug 14, 2025 (7 filings since May 2, 2022)
- Bank of America Filed SC 13G/A on Werewolf Therapeutics, Inc., latest Nov 14, 2024 (2 filings since Feb 13, 2024)
- Rubric Capital Management LP Filed SC 13G/A on Werewolf Therapeutics, Inc., latest Nov 13, 2024 (3 filings since Feb 10, 2023)
- Adage Capital Management, L.P. Filed SC 13G/A on Werewolf Therapeutics, Inc., latest Nov 12, 2024
- ADAGE CAPITAL PARTNERS GP, L.L.C. Filed SC 13G on Werewolf Therapeutics, Inc., latest Dec 21, 2023
- James E. Flynn Filed SC 13G/A on Werewolf Therapeutics, Inc., latest Feb 11, 2022
- Werewolf Therapeutics, Inc. Waltham, Massachusetts
Built from major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
What it owns
What Werewolf 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 | $11.3M8 Dec 31, 2025 | $11.3M8 Dec 31, 2024 | 0% |
| Property and equipment, net | $4.7M8 Dec 31, 2025 | $6.3M8 Dec 31, 2024 | −25.8% |
| Operating-lease assets (leased space) | $5.2M8 Dec 31, 2025 | $6.0M8 Dec 31, 2024 | −13.1% |
Investments
| Item | Latest | A year before | Change |
|---|---|---|---|
| Cash and cash equivalents | $57.0M8 Dec 31, 2025 | $111.0M8 Dec 31, 2024 | −48.6% |
Properties, in its own words
Our principal facilities consist of office and laboratory space. We currently occupy 25,778 square feet of office and laboratory space in Watertown, Massachusetts under a lease that expires in May 2030. We believe that our existing facilities will be adequate and suitable for our needs for the foreseeable future.
Item 2 of the 10-K filed Mar 27, 2026.3
Leadership
Who has led Werewolf Therapeutics, Inc., and when. Pick a name to see everywhere that person has worked.
- Chief financial officerTimothy W. Trost Apr 29, 2021 to now11
- Chief operating officerReid Leonard Apr 29, 2021 to Jan 9, 202312
Board members and other officers (17)
- Chief Business OfficerSteven H. Bloom Apr 18, 2025 to now13
- Chief Scientific OfficerCynthia Seidel-Dugan Apr 29, 2021 to Jan 4, 202414
- OfficerDaniel J. Hicklin Apr 29, 2021 to now15
- Chief Business OfficerEllen Lubman Apr 29, 2021 to now16
- Chief Medical OfficerRandi Isaacs Apr 29, 2021 to now17
- Chief Technology OfficerChulani Karunatilake Jun 15, 2021 to now18
- Board memberMichael B. Atkins Jan 4, 2024 to now19
- Board memberAlon Lazarus Apr 29, 2021 to now20
- Board memberBriggs Morrison Apr 29, 2021 to now21
- Board memberDaniel J. Hicklin Apr 29, 2021 to now15
- Board memberDerek Dirocco Apr 29, 2021 to May 24, 202422
- Board memberLuke Evnin Apr 29, 2021 to now23
- Board memberPeter Kolchinsky Apr 29, 2021 to now24
- Board memberRajeev M. Shah Apr 29, 2021 to now24
- Board memberSakae Asanuma Apr 29, 2021 to May 4, 202125
- Board memberMichael A. Sherman May 28, 2021 to now26
- Board memberMeeta Chatterjee Nov 1, 2021 to now27
Timeline
- Aug 21, 20268-K Entered a material agreement; Unregistered sale of shares; Regulation FD disclosure28
- Aug 20, 20268-K Entered a material agreement29
- Jul 31, 20268-K Results of operations30
- May 7, 20268-K Results of operations31
- Mar 27, 20268-K Results of operations32
- Feb 24, 20268-K Other events33
- Feb 13, 20268-K Exit or restructuring costs; Executive or director change; Regulation FD disclosure34
- Feb 6, 20268-K Listing notice or transfer35
- Dec 18, 20258-K Other events36
- Nov 4, 20258-K Results of operations37
- Oct 6, 20258-K Listing notice or transfer38
- Aug 14, 20258-K Results of operations; Regulation FD disclosure39
Calendar
Coming up
- Nov 3, 2026Reports results for the quarter ending Sep/2026 A year earlier it reported ($0.36) a share, on Nov 4, 2025.40
When it reported results
- Jul 31, 2026Reported quarterly or annual results30
- May 7, 2026Reported quarterly or annual results31
- Mar 27, 2026Reported quarterly or annual results32
- Nov 4, 2025Reported quarterly or annual results37
- Aug 14, 2025Reported quarterly or annual results39
- May 8, 2025Reported quarterly or annual results41
- Mar 11, 2025Reported quarterly or annual results42
- Nov 7, 2024Reported quarterly or annual results43
Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar
Filings
369 filings to the SEC since October 2021: 5 annual reports, 15 quarterly reports, 47 major events, 124 insider forms, 35 large holders, 143 other. The latest 20:
- Sep 22, 2026S-4 EDGAR
- Sep 21, 2026SCHEDULE 13G EDGAR
- Aug 21, 2026425 EDGAR
- Aug 21, 20268-K EDGAR
- Aug 20, 20268-K EDGAR
- Jul 31, 202610-Q EDGAR
- Jul 31, 20268-K EDGAR
- Jul 8, 20264 EDGAR
- Jul 6, 2026144 EDGAR
- Jul 6, 2026144 EDGAR
- Jul 6, 2026144 EDGAR
- Jul 6, 2026144 EDGAR
- Jul 6, 2026144 EDGAR
- Jul 6, 2026144 EDGAR
- Jul 2, 2026SCHEDULE 13D/A EDGAR
- Jun 29, 2026144 EDGAR
- Jun 29, 2026144 EDGAR
- Jun 29, 2026144 EDGAR
- Jun 29, 2026144 EDGAR
- Jun 29, 2026144 EDGAR
The 369 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
161 open-market trades by officers, directors and large owners since October 2021: 4 buys and 157 sales. Grants, option exercises and gifts are left out.
| Date | Who | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Jul 7, 2026 | EVNIN LUKEDirector | Sale | 107,429 | $0.31 | $33.3K | Form 4 |
| Jul 6, 2026 | EVNIN LUKEDirector | Sale | 35,770 | $0.32 | $11.4K | Form 4 |
| Jun 29, 2026 | EVNIN LUKEDirector | Sale | 157,084 | $0.30 | $47.1K | Form 4 |
| Jun 17, 2026 | RA CAPITAL MANAGEMENT, L.P.10% owner | Sale | 416,911 | $0.35 | $145.9K | Form 4 |
| Jun 16, 2026 | RA CAPITAL MANAGEMENT, L.P.10% owner | Sale | 149,625 | $0.37 | $55.4K | Form 4 |
| Jun 15, 2026 | RA CAPITAL MANAGEMENT, L.P.10% owner | Sale | 128,770 | $0.39 | $50.2K | Form 4 |
| Jun 12, 2026 | RA CAPITAL MANAGEMENT, L.P.10% owner | Sale | 170,441 | $0.40 | $68.2K | Form 4 |
| Jun 11, 2026 | Kolchinsky Peter10% owner | Sale | 262,503 | $0.38 | $99.8K | Form 4 |
| Jun 10, 2026 | Kolchinsky Peter10% owner | Sale | 45,923 | $0.37 | $17.0K | Form 4 |
| Jun 9, 2026 | Kolchinsky Peter10% owner | Sale | 369,800 | $0.37 | $136.8K | Form 4 |
| Jun 9, 2026 | EVNIN LUKEDirector | Sale | 76,928 | $0.37 | $28.5K | Form 4 |
| Jun 8, 2026 | EVNIN LUKEDirector | Sale | 60,547 | $0.40 | $24.2K | Form 4 |
| Jun 5, 2026 | EVNIN LUKEDirector | Sale | 24,946 | $0.40 | $10.0K | Form 4 |
| Jun 4, 2026 | EVNIN LUKEDirector | Sale | 20,072 | $0.44 | $8.8K | Form 4 |
| Jun 3, 2026 | EVNIN LUKEDirector | Sale | 29,749 | $0.42 | $12.5K | Form 4 |
| Jun 2, 2026 | EVNIN LUKEDirector | Sale | 29,595 | $0.45 | $13.3K | Form 4 |
| Jun 1, 2026 | EVNIN LUKEDirector | Sale | 80,459 | $0.47 | $37.8K | Form 4 |
| May 29, 2026 | EVNIN LUKEDirector | Sale | 32,556 | $0.45 | $14.7K | Form 4 |
| May 28, 2026 | EVNIN LUKEDirector | Sale | 27,698 | $0.46 | $12.7K | Form 4 |
| May 27, 2026 | EVNIN LUKEDirector | Sale | 80,852 | $0.48 | $38.8K | Form 4 |
All 161 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.
- Peter MollSCHEDULE 13G, 1 filing Sep 21, 202644
- RA CAPITAL MANAGEMENT, L.P.SCHEDULE 13D/A, 11 filings Aug 12, 2022 to Jul 2, 202645
- MPM BioVentures 2014, L.P.SCHEDULE 13D/A, 7 filings Nov 4, 2025 to May 12, 202646
- Longwood Fund III, L.P.SCHEDULE 13G/A, 1 filing Feb 11, 202647
- PFM Health Sciences, LPSCHEDULE 13G/A, 7 filings May 2, 2022 to Aug 14, 202548
- Bank of AmericaSC 13G/A, 2 filings Feb 13, 2024 to Nov 14, 202449
- Rubric Capital Management LPSC 13G/A, 3 filings Feb 10, 2023 to Nov 13, 202450
- Adage Capital Management, L.P.SC 13G/A, 1 filing Nov 12, 202451
- ADAGE CAPITAL PARTNERS GP, L.L.C.SC 13G, 1 filing Dec 21, 202352
- James E. FlynnSC 13G/A, 1 filing Feb 11, 202253
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 |
|---|---|---|---|---|
| 2024 | Daniel J. Hicklin, Ph.D.President and Chief Executive Officer | 62 | $608.2K | $2.5M54 |
| 2024 | Randi Isaacs, M.D.Chief Medical Officer | 69 | $494.1K | $1.4M54 |
| 2024 | Timothy W. TrostChief Financial Officer and Treasurer | 67 | $466.0K | $1.2M54 |
| 2023 | Daniel J. Hicklin, Ph.D.President and Chief Executive Officer | 62 | $583.4K | $1.4M54 |
| 2023 | Randi Isaacs, M.D.Chief Medical Officer | 69 | $474.0K | $855.8K54 |
| 2023 | Timothy W. TrostChief Financial Officer and Treasurer | 67 | $447.0K | $815.6K54 |
Held by these funds
The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 45. Change is in shares since the quarter before.
| Fund | Shares | Value | Share of the fund | Change |
|---|---|---|---|---|
| Ra Capital Management, L.P. | 2,387,744 | $859.3K | 0.0% | −4,293,563 |
| Balyasny Asset Management L.P. | 1,790,089 | $644.3K | 0.0% | New |
| Vanguard Capital Management LLC | 1,217,976 | $438.5K | 0.0% | No change |
| Renaissance Technologies LLC | 674,632 | $242.8K | 0.0% | +158,414 |
| Lynx1 Capital Management LP | 657,786 | $236.7K | 0.0% | No change |
| Sphera Funds Management Ltd. | 626,810 | $225.6K | 0.0% | No change |
| DC Funds, LP | 589,102 | $212.0K | 16.9% | No change |
| Verdad Advisers, LP | 348,709 | $125.5K | 0.1% | +318,949 |
| Geode Capital Management, LLC | 335,815 | $120.9K | 0.0% | −53,672 |
| Bank Of America Corp /de/ | 311,502 | $111.8K | 0.0% | +46,919 |
| XTX Topco Ltd | 271,478 | $97.7K | 0.0% | +220,549 |
| Jane Street Group, LLC | 251,837 | $90.6K | 0.0% | +169,001 |
| UBS Group AG | 215,838 | $77.7K | 0.0% | +148,981 |
| Vanguard Fiduciary Trust Co | 157,726 | $56.8K | 0.0% | No change |
| State Street Corp | 119,168 | $42.9K | 0.0% | No change |
| Squarepoint Ops LLC | 103,242 | $37.2K | 0.0% | New |
| BlackRock, Inc. | 101,573 | $36.6K | 0.0% | −35 |
| Rangeley Capital, LLC | 100,000 | $36.0K | 0.0% | New |
| Northern Trust Corp | 86,851 | $31.3K | 0.0% | No change |
| Alyeska Investment Group, L.P. | 86,554 | $31.2K | 0.0% | No change |
| Mpm Bioimpact LLC | 80,142 | $28.9K | 0.0% | −1,128,668 |
| Millennium Management LLC | 62,055 | $22.3K | 0.0% | −69,995 |
| Two Sigma Investments, LP | 27,300 | $9.8K | 0.0% | New |
| StoneX Group Inc. | 20,000 | $9.0K | 0.0% | New |
| Goldman Sachs Group Inc | 20,023 | $7.2K | 0.0% | −18,243 |
13F reports cover disclosed long positions in U.S. stocks only.
SEC filer profile
How Werewolf 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 EDGARWerewolf Therapeutics, Inc.1
- CIK0001785530
- Employer ID (EIN)82-35231803
- Filer statusNon‑accelerated filer an emerging growth company; a smaller reporting company; not a shell company3
- Incorporated inDelaware3
- Fiscal year endsDecember 311
- Industry code (SIC)2834 Pharmaceutical Preparations1
- SEC reviewing officeOffice of Life Sciences, Division of Corporation Finance1
- Business address303 Wyman Street, Suite 300, Waltham, MA 024511
- Phone617-952-05551
- Shares outstanding48,599,066 as of Jul 27, 202610
- Public float$39.6M as of Jun 30, 20253
- AuditorErnst & Young LLP, Boston, Massachusetts PCAOB ID 42; no auditor attestation of internal control over financial reporting3
- On EDGAR sinceAug 15, 20191
- Filings449 in all: 4 (144), 144 (114), 8-K (52), 3 (28), 10-Q (17), SCHEDULE 13D/A (14), SC 13G/A (8), SC 13G (7)1
All 35 form types
S-8 (6), 10-K (5), CORRESP (5), SC 13D/A (5), DEF 14A (4), DEFA14A (4), SC 13D (4), ARS (3), EFFECT (3), SCHEDULE 13G/A (3), UPLOAD (3), 424B5 (2), D (2), S-3 (2), SEC STAFF LETTER (2), 424B4 (1), 425 (1), 8-A12B (1), CERT (1), D/A (1), DRS (1), S-1 (1), S-1/A (1), S-1MEF (1), S-4 (1), S-8 POS (1), SCHEDULE 13G (1)
- Latest filingsAnnual report (10-K) Mar 27, 2026
Quarterly report (10-Q) Jul 31, 2026
Proxy statement (DEF 14A) Apr 28, 2025
Latest 8-K (8-K) Aug 21, 2026
Securities registered for trading
| Class | Symbol | Exchange |
|---|---|---|
| Common Stock, $0.0001 par value per share | HOWL | The Nasdaq Global Select Market |
From the cover page of the 10-K filed Mar 27, 2026 (Section 12(b) of the Exchange Act).3
Risk factors and legal proceedings
The risks Werewolf Therapeutics, Inc. names in Item 1A of its 10-K filed Mar 27, 2026: 77 risks under these headings, as written.3
- Risks Related to Our Limited Operating History, Financial Position and Capital Requirements
- Substantial doubt exists as to our ability to continue as a going concern.
- We will need additional funding. If we are unable to raise capital, we could be forced to delay, reduce, or eliminate our product development programs or commercialization efforts, engage in one or more potential transactions, or cease our operations entirely. We are continuing to evaluate strategic alternatives and our ability to extend our capital resources. The potential impact and success of our exploration of any strategic alternatives, if available at all, are uncertain and may not be successful.
- We have a limited operating history, have incurred significant operating losses since our inception and expect to incur significant losses for the foreseeable future.
- We have no products approved for commercial sale and have not generated any revenue from product sales. We may never generate any revenue or become profitable or, if we achieve profitability, we may not be able to sustain it.
- We will need to obtain substantial additional funding to finance our operations and complete the development and any commercialization of WTX-124, WTX-330, our INDUCER molecules, and any future product candidates. If we are unable to raise this capital when needed, we may be forced to delay, reduce or eliminate one or more of our research and development programs or other operations.
- Raising additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish rights to our platform technology or product candidates.
- We have a term loan facility that requires us to comply with certain operating covenants and places restrictions on our operating and financial flexibility.
- Changes in tax laws or in their implementation or interpretation could adversely affect our business and financial condition.
- Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited.
- Risks Related to the Discovery, Development, Regulatory Approval and Commercialization of Our Product Candidates
- We are early in our development efforts and our current product candidates will require successful completion of preclinical and clinical development before we can seek regulatory approval for any product candidates.
The other 65 risks
- Our business is highly dependent on the success of our initial INDUKINE and INDUCER molecules, which are in the early stages of development and will require significant additional preclinical and clinical development before we can seek regulatory approval for and launch a product commercially.
- Our approach to the discovery and development of product candidates based on our PREDATOR platform is unproven, and we do not know whether we will be able to develop any products of commercial value.
- Manufacturing INDUKINE and INDUCER molecules is subject to risk since they are a novel class of multi-domain biologics that include protease cleavable linkers, and they have never been produced on a commercial scale. We may be unable to manufacture INDUKINE or INDUCER molecules at the scale needed for late-stage clinical development and commercial production on a timely basis or at all, which would adversely affect our ability to conduct clinical trials and seek regulatory approvals or commercialize our programs, which would have an adverse effect on our business.
- We may expend our limited resources to pursue a particular product candidate or indication and fail to capitalize on product candidates or indications that may be more profitable or for which there is a greater likelihood of success.
- Preclinical development is uncertain. Our preclinical programs may experience delays or may never advance to clinical trials, which would adversely affect our ability to obtain regulatory approvals or commercialize these programs on a timely basis or at all, which would have an adverse effect on our business.
- Preclinical studies and clinical trials are expensive, time-consuming and difficult to design and implement, and involve uncertain outcomes. Furthermore, results of earlier preclinical studies and clinical trials may not be predictive of results of future preclinical studies or clinical trials.
- We may encounter substantial delays in the commencement or completion, or termination or suspension, of our clinical trials, which could result in increased costs to us, delay or limit our ability to generate revenue and adversely affect our commercial prospects.
- If we experience delays or difficulties in the enrollment of patients in clinical trials, our clinical development activities could be delayed or otherwise adversely affected.
- Our product candidates may cause undesirable or unexpectedly severe side effects that could delay or prevent their regulatory approval, limit the commercial profile of an approved label, or result in significant negative consequences following marketing approval, if any.
- 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.
- We are developing WTX-124, and could potentially develop WTX-330 and future product candidates, in combination with third-party drugs, some of which may still be in development, and we will have limited or no control over the safety, supply, regulatory status or regulatory approval of such drugs.
- We may not be successful in our efforts to identify or discover additional product candidates.
- We may become exposed to costly and damaging liability claims, either when testing our product candidates in the clinic or following commercial sale, and any product liability insurance we may obtain may not cover all damages from such claims.
- We have never commercialized a product candidate and we may lack the necessary expertise, personnel and resources to successfully commercialize any products that receive regulatory approval, either on our own or together with collaborators.
- We face substantial competition, which may result in others discovering, developing or commercializing products before or more successfully than we do.
- The sizes of the potential markets for our product candidates are difficult to estimate and, if any of our assumptions are inaccurate, the actual markets for our product candidates may be smaller than our estimates.
- The successful commercialization of our product candidates will depend in part on the extent to which we obtain and maintain favorable coverage, adequate reimbursement levels and pricing policies with third party payors.
- Even if a product candidate we develop receives marketing approval, it may fail to achieve the degree of market acceptance by physicians, patients, hospitals, cancer treatment centers, third-party payors and others in the medical community necessary for commercial success.
- We expect that WTX-124 and WTX-330, and other product candidates we develop, will be regulated as biological products, or biologics, and therefore they may be subject to competition sooner than anticipated.
- Risks Related to Our Dependence on Third Parties
- We rely, and expect to continue to rely, on third parties to conduct our preclinical studies and clinical trials. If these third parties do not successfully carry out their contractual duties or meet expected deadlines or comply with regulatory requirements, we may not be able to obtain regulatory approval of or commercialize any product candidates.
- The manufacturing of biologics is complex and we do not have our own clinical manufacturing capabilities. We will rely on third parties to produce preclinical, clinical and commercial supplies of all current and any future product candidates.
- We have entered into, and may in the future seek to enter into, collaborations or other similar arrangements for our product candidates. If we are unable to enter into such collaborations, or if these collaborations are not successful, our business could be adversely affected.
- Risks Related to Our Intellectual Property
- If we are unable to obtain and maintain patent protection for any product candidates we develop or for our PREDATOR platform and other proprietary technologies we may develop, or if the scope of the patent protection obtained is not sufficiently broad, our competitors could develop and commercialize product candidates and technology similar or identical to our product candidates and technology, and our ability to successfully commercialize any product candidates we may develop, and our technology may be adversely affected.
- We rely on the Harpoon Agreement for patent rights with respect to our product candidates and may in the future acquire additional third-party intellectual property rights on which we may similarly rely. We face risks with respect to such reliance, including the risk that we could lose these rights that are important to our business if we fail to comply with our obligations under these licenses.
- If our efforts to protect the proprietary nature of the intellectual property related to our technologies and product candidates are not adequate, we may not be able to compete effectively in our market.
- Our proprietary position in part depends upon patents that are manufacturing, formulation or method-of-use patents, which may not prevent a competitor or other third party from using the same product candidate for another use.
- If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed.
- Third-party claims of intellectual property infringement may prevent or delay our product discovery and development efforts.
- We may not be successful in obtaining or maintaining necessary rights to product components and processes for our development pipeline through acquisitions and in-licenses.
- We may be involved in lawsuits to protect or enforce our patents or the patents of our licensors, which could be expensive, time-consuming and unsuccessful.
- 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 non-compliance with these requirements.
- Issued patents covering our product candidates or technology could be found invalid or unenforceable if challenged in court or the USPTO.
- Changes to patent law in the United States and in foreign jurisdictions could diminish the value of patents in general, thereby impairing our ability to protect our products.
- We have limited foreign intellectual property rights and may not be able to protect our intellectual property rights throughout the world.
- We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property.
- We may be subject to damages resulting from claims that we or our employees have wrongfully used or disclosed confidential information of our competitors or are in breach of non-competition or non-solicitation agreements with our competitors.
- If we do not obtain patent term extension and data exclusivity for any of our current or future product candidates, our business may be materially harmed.
- If our trademarks and trade names are not adequately protected, then we may not be able to build name recognition in our marks of interest and our business may be adversely affected.
- Numerous factors may limit any potential competitive advantage provided by our intellectual property rights.
- Risks Related to Regulatory Approval and Marketing of Our Product Candidates and Other Legal Compliance Matters
- Even if we complete the necessary preclinical studies and clinical trials, the regulatory approval process is expensive, time consuming and uncertain and may prevent us from obtaining approvals for the commercialization of some or all of our product candidates. As a result, we cannot predict when or if, and in which territories, we will obtain marketing approval to commercialize a product candidate.
- Failure to obtain marketing approval in foreign jurisdictions would prevent our product candidates from being marketed abroad. Any approval we may be granted for our product candidates in the United States would not assure approval of our product candidates in foreign jurisdictions and any of our product candidates that may be approved for marketing in a foreign jurisdiction will be subject to risks associated with foreign operations.
- We may not be able to obtain orphan drug designation or orphan drug exclusivity for our product candidates and, even if we do, that exclusivity may not prevent the FDA or the EMA from approving competing products.
- Any product candidate for which we obtain marketing approval is subject to ongoing regulation and could be subject to restrictions or withdrawal from the market, and we may be subject to substantial penalties if we fail to comply with regulatory requirements, when and if any of our product candidates are approved.
- Any regulatory approval to market our products will be limited by indication. If we fail to comply or are found to be in violation of FDA regulations restricting the promotion of our products for unapproved uses, we could be subject to criminal penalties, substantial fines or other sanctions and damage awards.
- We may seek certain designations for our product candidates, including Breakthrough Therapy, Fast Track and Priority Review designations, but we might not receive such designations, and even if we do, such designations may not lead to a faster development or regulatory review or approval process.
- We may seek PRIME Designation in the EU for one or more of our product candidates, but we might not receive such designations and, even if we do, such designations may not lead to a faster development or regulatory review or approval process.
- Accelerated approval by the FDA, even if granted for any of our current or future product candidates, may not lead to a faster development or regulatory review or approval process and it does not increase the likelihood that our product candidates will receive marketing approval.
- We and our contract manufacturers are subject to significant regulation. The manufacturing facilities on which we rely may not continue to meet regulatory requirements, which could materially harm our business.
- We intend in the future to conduct clinical trials for certain of our product candidates at sites outside the United States. The FDA may not accept data from trials conducted in such locations and the conduct of trials outside the United States could subject us to additional delays and expense.
- Current and future legislation may increase the difficulty and cost for us to obtain reimbursement for any of our candidate products that do receive marketing approval.
- Current and future legislative efforts may limit the costs for our products, if and when they are licensed for marketing, and that could materially impact our ability to generate revenues.
- We may be subject to certain healthcare laws and regulations, which could expose us to criminal sanctions, civil penalties, contractual damages, reputational harm, fines, disgorgement, exclusion from participation in government healthcare programs, curtailment or restricting of our operations, and diminished profits and future earnings.
- Compliance with state, national and international privacy and data security requirements could result in additional costs and liabilities to us or inhibit our ability to collect and process data globally, and the failure to comply with such requirements could subject us to a variety of harms, including significant fines and penalties, litigation and reputational damage, any of which may have a material adverse effect on our business, financial condition or results of operations.
- We are subject to U.S. and certain foreign export control, import, sanctions, anti-corruption, and anti-money laundering laws with respect to our operations and non-compliance with such laws can subject us to criminal and/or civil liability and harm our business.
- Changes in and uncertainty surrounding U.S. and international trade policies could have a material adverse impact on our business, financial condition and results of operations.
- Changes in U.S. and international trade policies, particularly with respect to China, may adversely impact our business and operating results.
- 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 employees, independent contractors, CROs, consultants, commercial partners, vendors and principal investigators may engage in misconduct or other improper activities, including non-compliance with regulatory standards and requirements.
- The biopharmaceutical industry is subject to extensive regulatory obligations and policies that may be subject to change, including due to judicial challenges, election cycles, and resulting regulatory updates and changes in policy priorities.
- Risks Related to Our Business Operations, Employee Matters and Managing Growth
- Our future success depends on our ability to retain key employees, consultants and advisors and to attract, retain and motivate qualified personnel.
- We may encounter difficulties in managing the growth of our organization, which could disrupt our operations.
- Our business could be negatively affected by cyberattacks or a deficiency in our cybersecurity.
- Our internal computer systems, or those used by our third-party research institution collaborators, CROs or other contractors or consultants, may fail or suffer security breaches.
- Business disruptions and unfavorable economic conditions could seriously harm our business, future revenue and financial condition, and could increase our costs and expenses.
Legal proceedings
We are not currently a party to any material legal proceedings.
The opening of Item 3, Legal Proceedings.3
Sources
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- 15SEC EDGARDaniel J. Hicklin, Officer
- 16SEC EDGAREllen Lubman, Chief Business Officer
- 17SEC EDGARRandi Isaacs, Chief Medical Officer
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- 19SEC EDGARMichael B. Atkins, Board member
- 20SEC EDGARAlon Lazarus, Board member
- 21SEC EDGARBriggs Morrison, Board member
- 22SEC EDGARDerek Dirocco, Board member
- 23SEC EDGARLuke Evnin, Board member
- 24SEC EDGARPeter Kolchinsky, Board member
- 25SEC EDGARSakae Asanuma, Board member
- 26SEC EDGARMichael A. Sherman, Board member
- 27SEC EDGARMeeta Chatterjee, Board member
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- 29SEC EDGAREntered a material agreement
- 30SEC EDGARResults of operations
- 31SEC EDGARResults of operations
- 32SEC EDGARResults of operations
- 33SEC EDGAROther events
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- 35SEC EDGARListing notice or transfer
- 36SEC EDGAROther events
- 37SEC EDGARResults of operations
- 38SEC EDGARListing notice or transfer
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