David Hallal

Companies

• Scholar Rock Holding CorpChief executive officer Apr 29, 2025 to now¹
• Kalaris Therapeutics, Inc.Board member Jul 30, 2020 to now²
• iTeos Therapeutics, Inc.Board member Jul 23, 2020 to now³
• Scholar Rock Holding CorpBoard member May 23, 2018 to now⁴
• Seer, IncBoard member Dec 3, 2020 to Jun 14, 2024⁵
• Kalaris Therapeutics, Inc.Chief executive officer Jul 30, 2020 to Jan 25, 2021²
• Alexion PharmaceuticalsChief executive officer Apr 2, 2015 to Aug 10, 2016⁶
• Alexion PharmaceuticalsBoard member Nov 4, 2014 to Aug 10, 2016⁷
• Alexion PharmaceuticalsChief operating officer Nov 4, 2014 to Mar 3, 2015⁷
• Alexion PharmaceuticalsSVP, Comm Opns, Americas Mar 5, 2009 to Aug 5, 2014⁸

Holdings

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

Shares held

• SRScholar Rock Holding Corp SRRK1,807,382 shares⁹$73.7M at $40.78Sep 23, 2026
• KTKalaris Therapeutics, Inc. KLRS18,818,428 shares¹⁰$41.2M at $2.19Jun 7, 2024
• Seer, Inc SEER355,128 shares¹¹$728.0K at $2.05Jun 12, 2024
• ITiTeos Therapeutics, Inc.0 shares¹²Jun 6, 2025

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

Recent filings

• Sep 21, 2026Gift 36,652 shares of Scholar Rock Holding Corp⁹
• Apr 16, 2026Sold 30,615 shares at $49.57 of Scholar Rock Holding Corp¹³
• Feb 9, 2026Granted 128,004 shares of Scholar Rock Holding Corp¹⁴
• Jan 13, 2026Sold 57,450 shares at $42.70 of Scholar Rock Holding Corp¹⁵
• Oct 8, 2025Gift 205,000 shares of Scholar Rock Holding Corp¹⁶
• Jun 6, 2025Sold 38,228 shares at $10.24 of iTeos Therapeutics, Inc.¹²
• Jun 6, 2025Exercised options 38,228 shares at $4.30 of iTeos Therapeutics, Inc.¹²
• Jun 5, 2025Sold 38,227 shares at $10.15 of iTeos Therapeutics, Inc.¹²
• Jun 5, 2025Exercised options 38,227 shares at $4.30 of iTeos Therapeutics, Inc.¹²
• Jun 4, 2025Sold 38,227 shares at $10.07 of iTeos Therapeutics, Inc.¹²
• Jun 4, 2025Exercised options 38,227 shares at $4.30 of iTeos Therapeutics, Inc.¹²
• Apr 27, 2025Granted 1,250,000 shares of Scholar Rock Holding Corp¹⁷
• Apr 27, 2025Granted 250,000 shares of Scholar Rock Holding Corp¹⁷
• Jun 27, 2024Granted 13,500 shares of Scholar Rock Holding Corp¹⁸
• Jun 12, 2024Granted 58,178 shares of Seer, Inc¹¹
• Jun 6, 2024Granted 35,000 shares of Kalaris Therapeutics, Inc.¹⁰
• Jun 14, 2023Granted 23,443 shares of Seer, Inc¹⁹
• May 11, 2023Granted 35,000 shares of Kalaris Therapeutics, Inc.²⁰
• Oct 19, 2022Sold 600,000 shares at $8.45 of Kalaris Therapeutics, Inc.²¹
• Sep 29, 2022Sold 400,000 shares at $7.35 of Kalaris Therapeutics, Inc.²²
• Jul 28, 2022Granted 3,253,796 shares at $4.61 of Kalaris Therapeutics, Inc.²³
• Jul 21, 2022Sold 4,227 shares at $5.33 of Kalaris Therapeutics, Inc.²⁴
• Jun 15, 2022Granted 9,945 shares of Seer, Inc²⁵
• Jun 9, 2022Sold 1,171 shares at $19.51 of iTeos Therapeutics, Inc.²⁶
• Jun 9, 2022Exercised options 1,171 shares at $4.23 of iTeos Therapeutics, Inc.²⁶