Mark Thierer

President, Veradigm Inc.

Companies

P3 Health Partners Inc.Board member Dec 7, 2021 to now¹
Discover FinancialBoard member Apr 18, 2013 to May 15, 2023²
Senior Connect Acquisition Corp. IBoard member Dec 10, 2020 to Dec 10, 2020³
Dentsply SironaInterim Chief Exec Officer Oct 2, 2017 to Feb 27, 2018⁴
Catamaran CorporationChief executive officer Aug 27, 2008 to Jul 23, 2015⁵
Catamaran CorporationPresident Apr 11, 2008 to Jul 23, 2015⁶
Catamaran CorporationChief operating officer Apr 11, 2008 to Apr 11, 2008⁶
Veradigm Inc.President Jan 25, 2006 to Sep 12, 2006⁷

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

P3 Health Partners Inc. PIII21,182 shares⁸$82.8K at $3.91Jan 23, 2026
Discover Financial DFS24,563 shares⁹May 11, 2023

As of each latest filing. The line shows shares held over time.

Recent filings

Aug 6, 2025Granted 4,000 shares of P3 Health Partners Inc.¹⁰
Aug 6, 2025Granted 4,000 shares of P3 Health Partners Inc.⁸
Oct 23, 2023Granted 433,121 shares of P3 Health Partners Inc.¹¹
May 11, 2023Granted 1,774 shares of Discover Financial⁹
May 19, 2022Granted 1,634 shares of Discover Financial¹²

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARP3 Health Partners Inc., Board member
2
SEC EDGARDiscover Financial, Board member
3
SEC EDGARSenior Connect Acquisition Corp. I, Board member
4
SEC EDGARDentsply Sirona, Interim Chief Exec Officer
5
SEC EDGARCatamaran Corporation, Chief executive officer
6
SEC EDGARCatamaran Corporation, President
7
SEC EDGARVeradigm Inc., President
8
SEC EDGARP3 Health Partners Inc. shares after the filing of Jan 23, 2026
9
SEC EDGARDiscover Financial shares after the filing of May 11, 2023
10
SEC EDGARForm 4 filed Aug 8, 2025
11
SEC EDGARForm 4 filed Jan 25, 2024
12
SEC EDGARForm 4 filed May 23, 2022