As of March 23, 2026, the three largest insider holders of COLL are Capital Management Lp Rubric (TenPercentOwner, 3.13Mn shares), Joseph Ciaffoni (President And Ceo, 444.87K shares), Vikram Karnani (President And Ceo, 197.86K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Capital Management Lp Rubric | 0 | 3,132,743 | 15 Aug, 2025 | |
| Joseph Ciaffoni | President And Ceo | 444,867 | 0 | 14 Feb, 2024 |
| Vikram Karnani | President And Ceo | 197,864 | 0 | 12 Feb, 2026 |
| Colleen Tupper | Evp Chief Financial Officer | 147,282 | 0 | 12 Feb, 2026 |
| Alison B Fleming | Evp Chief Technical Officer | 143,694 | 0 | 12 Aug, 2021 |
| Richard Malamut | Evp And Chief Medical Officer | 130,264 | 0 | 14 Feb, 2022 |
| Shirley R. Kuhlmann | Evp And General Counsel | 108,137 | 0 | 06 Mar, 2025 |
| Gino Santini | 95,042 | 0 | 19 Aug, 2025 | |
| Thomas B Smith | Evp And Chief Medical Officer | 90,651 | 0 | 12 Feb, 2026 |
| David Dieter | Evp General Counsel | 77,071 | 0 | 20 Mar, 2026 |
| Scott Dreyer | Evp Chief Commercial Officer | 71,770 | 0 | 05 Mar, 2026 |
| John Gordon Freund | 70,658 | 0 | 11 Jun, 2025 | |
| John A. Fallon | 64,634 | 0 | 14 Nov, 2025 | |
| Gwen A Melincoff | 52,468 | 0 | 16 May, 2024 | |
| Michael Thomas Heffernan | 50,328 | 0 | 12 Feb, 2025 | |
| Neil F. Mcfarlane | 49,365 | 0 | 16 May, 2024 | |
| John Gordon Freund | 0 | 23,129 | 12 Aug, 2025 | |
| Nancy Lurker | 22,517 | 0 | 19 May, 2025 | |
| Carlos V Paya | 19,582 | 0 | 19 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Mar, 2026 | David Dieter | Common Stock | D | 13,976 | $34.92 | 77,071 | D | S |
| 09 Mar, 2026 | David Dieter | Common Stock | D | 6,224 | $36.65 | 91,047 | D | S |
| 03 Mar, 2026 | Scott Dreyer | Common Stock | D | 46,417 | $40.36 | 75,329 | D | S |
| 03 Mar, 2026 | Scott Dreyer | Common Stock | D | 3,559 | $40.99 | 71,770 | D | S |
| 10 Feb, 2026 | Thomas B Smith | Common Stock | A | 14,268 | $0.00 | 85,312 | D | A |
| 10 Feb, 2026 | Scott Dreyer | Common Stock | A | 19,023 | $0.00 | 122,636 | D | A |
| 10 Feb, 2026 | Colleen Tupper | Common Stock | A | 26,421 | $0.00 | 153,088 | D | A |
| 10 Feb, 2026 | David Dieter | Common Stock | A | 22,194 | $0.00 | 91,047 | D | A |
| 10 Feb, 2026 | Vikram Karnani | Common Stock | A | 79,264 | $0.00 | 176,629 | D | A |
| 10 Feb, 2026 | Thomas B Smith | Common Stock | A | 22,774 | $0.00 | 108,086 | D | A |
| 10 Feb, 2026 | Scott Dreyer | Common Stock | A | 30,702 | $0.00 | 153,338 | D | A |
| 10 Feb, 2026 | Colleen Tupper | Common Stock | A | 32,734 | $0.00 | 185,822 | D | A |
| 10 Feb, 2026 | Vikram Karnani | Common Stock | A | 32,531 | $0.00 | 209,160 | D | A |
| 10 Feb, 2026 | David Dieter | Common Stock | A | 9,005 | $0.00 | 100,052 | D | A |
| 10 Feb, 2026 | Colleen Tupper | Common Stock | D | 11,861 | $46.75 | 173,961 | D | F |
| 10 Feb, 2026 | Scott Dreyer | Common Stock | D | 9,977 | $46.75 | 143,361 | D | F |
| 10 Feb, 2026 | Vikram Karnani | Common Stock | D | 11,296 | $46.75 | 197,864 | D | F |
| 10 Feb, 2026 | David Dieter | Common Stock | D | 2,781 | $46.75 | 97,271 | D | F |
| 10 Feb, 2026 | Thomas B Smith | Common Stock | D | 5,897 | $46.75 | 102,189 | D | F |
| 10 Feb, 2026 | Scott Dreyer | Common Stock | D | 21,615 | $46.75 | 121,746 | D | F |