As of March 23, 2026, Scholar Rock Holding's top three insider holders are Biocapital Gp, Llc Samsara (TenPercentOwner, 6.79Mn shares), Kristina Burow (Director, 2.35Mn shares), Akshay Vaishnaw (President Of Rd, 642.79K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Biocapital Gp, Llc Samsara | 0 | 6,788,609 | 18 Oct, 2023 | |
| Kristina Burow | 0 | 2,345,711 | 26 Dec, 2023 | |
| Akshay Vaishnaw | President Of Rd | 642,788 | 0 | 11 Feb, 2026 |
| Keith Woods | Chief Operating Officer | 630,275 | 0 | 11 Feb, 2026 |
| Vikas Sinha | Chief Financial Officer | 630,266 | 0 | 11 Feb, 2026 |
| Nagesh K. Mahanthappa | Interim Ceo And President | 480,491 | 0 | 21 Jun, 2022 |
| Jay T. Backstrom | Chief Executive Officer | 425,561 | 0 | 12 Mar, 2025 |
| Yung H. Chyung | Chief Medical Officer | 258,496 | 0 | 15 Feb, 2022 |
| Junlin Ho | General Counsel | 241,545 | 0 | 19 Feb, 2026 |
| Caryn Parlavecchio | Chro | 169,087 | 0 | 19 Feb, 2026 |
| Gregory John Carven | Chief Scientific Officer | 128,208 | 0 | 21 Jun, 2022 |
| Jing L. Marantz | Chief Medical Officer | 126,012 | 0 | 19 Feb, 2026 |
| Mo Qatanani | Chief Scientific Officer | 98,445 | 0 | 25 Feb, 2026 |
| Erin Moore | Interim Pfo And Pao | 82,609 | 0 | 25 Mar, 2025 |
| Tracey Sacco | Chief Commercial Officer | 71,750 | 0 | 29 Apr, 2025 |
| Amir Nashat | 38,639 | 0 | 13 May, 2024 | |
| Katie Peng | 32,908 | 0 | 18 Dec, 2025 | |
| Jeffrey S. Flier | 24,070 | 0 | 25 Jun, 2025 | |
| Kristina Burow | 21,071 | 0 | 30 May, 2025 | |
| Joshua Reed | 15,732 | 0 | 30 May, 2025 | |
| Richard Brudnick | 15,057 | 0 | 30 May, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 23 Feb, 2026 | Mo Qatanani | Common Stock | D | 7,427 | $46.94 | 99,502 | D | S |
| 23 Feb, 2026 | Mo Qatanani | Common Stock | D | 857 | $47.86 | 98,645 | D | S |
| 23 Feb, 2026 | Mo Qatanani | Common Stock | D | 200 | $48.48 | 98,445 | D | S |
| 17 Feb, 2026 | Caryn Parlavecchio | Common Stock | D | 9,035 | $46.53 | 169,087 | D | S |
| 17 Feb, 2026 | Mo Qatanani | Common Stock | D | 7,989 | $46.53 | 106,929 | D | S |
| 17 Feb, 2026 | Jing L. Marantz | Common Stock | D | 4,157 | $46.53 | 126,012 | D | S |
| 17 Feb, 2026 | Junlin Ho | Common Stock | D | 9,580 | $46.53 | 241,545 | D | S |
| 09 Feb, 2026 | Jing L. Marantz | Common Stock | A | 34,482 | $0.00 | 130,169 | D | A |
| 09 Feb, 2026 | Keith Woods | Common Stock | A | 47,021 | $0.00 | 630,275 | D | A |
| 09 Feb, 2026 | Junlin Ho | Common Stock | A | 36,572 | $0.00 | 251,125 | D | A |
| 09 Feb, 2026 | Mo Qatanani | Common Stock | A | 29,258 | $0.00 | 114,918 | D | A |
| 09 Feb, 2026 | Akshay Vaishnaw | Common Stock | A | 47,021 | $0.00 | 642,788 | D | A |
| 09 Feb, 2026 | Vikas Sinha | Common Stock | A | 47,021 | $0.00 | 630,266 | D | A |
| 09 Feb, 2026 | Caryn Parlavecchio | Common Stock | A | 29,258 | $0.00 | 178,122 | D | A |
| 22 Jan, 2026 | Mo Qatanani | Common Stock | D | 2,119 | $45.87 | 98,439 | D | S |
| 22 Jan, 2026 | Mo Qatanani | Common Stock | D | 12,779 | $46.85 | 85,660 | D | S |
| 16 Jan, 2026 | Mo Qatanani | Common Stock | D | 8,406 | $44.48 | 100,558 | D | S |
| 16 Jan, 2026 | Junlin Ho | Common Stock | D | 8,016 | $44.48 | 214,553 | D | S |
| 16 Jan, 2026 | Jing L. Marantz | Common Stock | D | 5,798 | $44.48 | 95,687 | D | S |
| 16 Jan, 2026 | Caryn Parlavecchio | Common Stock | D | 6,600 | $44.48 | 148,864 | D | S |