Hallal David
SEC insider (Form 3/4/5 filer). CIK 0001457477. Chief Executive Officer at Scholar Rock Holding Corp (SRRK) and 2 other issuers. 18 reported Form 4/5 transactions since Sep 2024; latest on Sep 21, 2026. Located in CAMBRIDGE, MA.
Companies Hallal David has filed insider reports for
- Scholar Rock Holding Corp (SRRK): Director, Officer, Chief Executive Officer
- Kalaris Therapeutics, Inc. (KLRS): Director
- iTeos Therapeutics, Inc. (ITOS): Director
Hallal David
CIK: 0001457477
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (18 total)
- Sep 21, 2026SRRK
Scholar Rock Holding Corp
GiftDirect36.7K shares- - Jun 3, 2026KLRS
Kalaris Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
9K shares- - Apr 16, 2026SRRK
Scholar Rock Holding Corp
SaleDirect30.6K shares at avg. $49.57$1.5M - Feb 9, 2026SRRK
Scholar Rock Holding Corp
AwardDirect128K shares- - Jan 13, 2026SRRK
Scholar Rock Holding Corp
SaleDirect57.5K shares at avg. $42.70$2.5M - Oct 8, 2025SRRK
Scholar Rock Holding Corp
GiftDirect205K shares- - Aug 29, 2025ITOS
iTeos Therapeutics, Inc.
DispositionDirectStock Option (Right to Buy)
146.2K shares- - Aug 29, 2025ITOS
iTeos Therapeutics, Inc.
DispositionDirectStock Option (Right to Buy)
25.1K shares- - Jun 6, 2025ITOS
iTeos Therapeutics, Inc.
ExerciseDirect38.2K shares at avg. $4.30$164K - Jun 6, 2025ITOS
iTeos Therapeutics, Inc.
SaleDirect38.2K shares at avg. $10.24$391K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 21, 2026 |  SRRK Scholar Rock Holding Corp | Gift | 36,652 | - | $0 | Direct |
| Jun 3, 2026 |  KLRS Kalaris Therapeutics, Inc. | Award Stock Option (Right to Buy) | 9,000 | - | - | Direct |
| Apr 16, 2026 | SRRK Scholar Rock Holding Corp | Sale | 30,615 | $49.57 | $1,517,723 | Direct |
| Feb 9, 2026 | SRRK Scholar Rock Holding Corp | Award | 128,004 | - | $0 | Direct |
| Jan 13, 2026 | SRRK Scholar Rock Holding Corp | Sale | 57,450 | $42.70 | $2,453,115 | Direct |
| Oct 8, 2025 | SRRK Scholar Rock Holding Corp | Gift | 205,000 | - | - | Direct |
| Aug 29, 2025 |  ITOS iTeos Therapeutics, Inc. | Disposition Stock Option (Right to Buy) | 146,160 | - | - | Direct |
| Aug 29, 2025 | ITOS iTeos Therapeutics, Inc. | Disposition Stock Option (Right to Buy) | 25,140 | - | - | Direct |
| Jun 6, 2025 | ITOS iTeos Therapeutics, Inc. | Exercise | 38,228 | $4.30 | $164,380 | Direct |
| Jun 6, 2025 | ITOS iTeos Therapeutics, Inc. | Sale | 38,228 | $10.24 | $391,455 | Direct |
1-10 of 18 transactions