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Who

David Hallal

Chief Executive Officer

Company insider

Files Form 4 as: Chief Executive Officer, Scholar Rock Holding; Chief Executive Officer, Kalaris Therapeutics; Director, iTeos Therapeutics; Director, Seer; CEO, Alexion Pharmaceuticals.

In numbers

Trades disclosed
263
Buys
0
Sells
80
Bought
$0
Sold
$71.5M
Companies
5
Companies where not an officer
2
First trade
11 Jun 2009
Last trade
21 Sep 2026
Last filed
23 Sep 2026

Companies traded

Where they are an officer
SRRK Scholar Rock HoldingDirector, Officer · Biotechnology · last 21 Sep 20260 buys · 2 sells
KLRS Kalaris TherapeuticsDirector, Officer, 10% owner · Biotechnology · last 3 Jun 20260 buys · 8 sells
Alexion PharmaceuticalsDirector, Officer · last 8 Aug 20160 buys · 64 sells
Everywhere else they filed: board seats, 10% stakes, other companies
iTeos TherapeuticsDirector · last 29 Aug 20250 buys · 6 sells
SEER SeerDirector · Life-science tools · last 12 Jun 20240 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
30Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
21 Sep 2026filed 23 Sep 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Code G—36,652 at $0.00filing
21 Sep 2026filed 23 Sep 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Code G—36,652 at $0.00filing
3 Jun 2026filed 4 Jun 2026KLRS Kalaris Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—9,000 at $0.00filing
3 Jun 2026filed 4 Jun 2026KLRS Kalaris Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—9,000 at $0.00filing
16 Apr 2026filed 20 Apr 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Sold$1.5M30,615 at $49.57filing
16 Apr 2026filed 20 Apr 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Sold$1.5M30,615 at $49.57filing
9 Feb 2026filed 11 Feb 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Code A—128,004 at $0.00filing
9 Feb 2026filed 11 Feb 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Code A—128,004 at $0.00filing
13 Jan 2026filed 15 Jan 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Sold$2.5M57,450 at $42.70filing
13 Jan 2026filed 15 Jan 2026SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Sold$2.5M57,450 at $42.70filing
8 Oct 2025filed 9 Oct 2025SRRK Scholar Rock HoldingBiotechnologySEC FORM 4 Code G—205,000 at $0.00filing
29 Aug 2025filed 29 Aug 2025iTeos Therapeuticsoption or derivativeSEC FORM 4 Code D—25,140filing
29 Aug 2025filed 29 Aug 2025iTeos Therapeuticsoption or derivativeSEC FORM 4 Code D—146,160filing
6 Jun 2025filed 6 Jun 2025iTeos Therapeuticsoption or derivativeSEC FORM 4 Code M—38,228 at $0.00filing
6 Jun 2025filed 6 Jun 2025iTeos TherapeuticsSEC FORM 4 Code M$164K38,228 at $4.30filing
6 Jun 2025filed 6 Jun 2025iTeos TherapeuticsSEC FORM 4 Sold$391K38,228 at $10.24filing
5 Jun 2025filed 6 Jun 2025iTeos Therapeuticsoption or derivativeSEC FORM 4 Code M—38,227 at $0.00filing
5 Jun 2025filed 6 Jun 2025iTeos TherapeuticsSEC FORM 4 Code M$164K38,227 at $4.30filing
5 Jun 2025filed 6 Jun 2025iTeos TherapeuticsSEC FORM 4 Sold$388K38,227 at $10.15filing
4 Jun 2025filed 6 Jun 2025iTeos Therapeuticsoption or derivativeSEC FORM 4 Code M—38,227 at $0.00filing

News

Scholar Rock Resubmits Marketing Authorisation Application For ApitegromabSRRK · rttnews.com · 8 Oct 2026

0 headlines in the last 90 days name David Hallal; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care10
Not placed70

Buys in green, sells in red, by the company’s sector.

Related people

Keith WoodsChief Operating Officer · Chief Operating Officer at Scholar Rock Holding, filing Form 4 there in the last year
Amy O'Leary VandekopVP, Corporate Controller · VP, Corporate Controller at Kalaris Therapeutics, filing Form 4 there in the last year
Laurie KeatingDirector · Director at Kalaris Therapeutics, filing Form 4 there in the last year
Liisa Ann BaykoChief Financial Officer · Chief Financial Officer at Kalaris Therapeutics, filing Form 4 there in the last year
Jeffrey S. FlierDirector · Director at Scholar Rock Holding, filing Form 4 there in the last year