Over the 90-day window ending January 14, 2026, Definitive Healthcare's three dominant insider ownership positions are held by Director International Corp/Ma Advent (62.49Mn shares), Director Lauren Young (62.49Mn shares), Director Christopher Egan (62.49Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| International Corp/Ma Advent | 62,493,676 | 24 Nov, 2021 | |
| Christopher Egan | 62,493,676 | 24 Nov, 2021 | |
| Lauren Young | 62,493,676 | 24 Nov, 2021 | |
| Kevin Coop | Chief Executive Officer | 3,556,552 | 05 Jan, 2026 |
| Jason Ronald Krantz | 1,510,584 | 04 Nov, 2025 | |
| Vii Management, Llc Sea | 1,441,657 | 24 Aug, 2023 | |
| Casey Heller | Chief Financial Officer | 1,275,490 | 07 Jan, 2026 |
| Robert W Musslewhite | Chief Executive Officer | 1,201,638 | 09 Jan, 2024 |
| Jonathan Maack | President | 699,650 | 07 May, 2024 |
| Kate Marie Shamsuddin | Chief Operating Officer | 694,149 | 05 Aug, 2025 |
| Benjamin Graboske | Evp And Chief Data Officer | 676,913 | 23 Dec, 2025 |
| Richard Douglas Booth | Chief Financial Officer | 652,630 | 05 May, 2025 |
| William Moschella | Chief Product & Tech Officer | 451,302 | 04 Feb, 2025 |
| Carrie Lazorchak | Chief Revenue Officer | 421,528 | 16 Feb, 2024 |
| Jonathan Paris | Chief Legal Officer | 421,349 | 02 Jul, 2025 |
| Christopher Mitchell | 226,126 | 24 Aug, 2023 | |
| Joseph Gianni Mirisola | Chief Revenue Officer | 185,198 | 18 Sep, 2023 |
| Sastry Chilukuri | 126,794 | 09 Jun, 2025 | |
| Scott G Stephenson | 124,124 | 09 Jun, 2025 | |
| Kathleen A Winters | 119,792 | 09 Jun, 2025 | |
| Jill Larsen | 114,751 | 09 Jun, 2025 | |
| Samuel A Hamood | 100,206 | 09 Jun, 2025 | |
| Jeffrey Charles Haywood | 41,934 | 24 Aug, 2023 | |
| David M Samuels | Chief Legal Officer | 23,167 | 16 Sep, 2022 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 05 Jan, 2026 | Casey Heller | Class A Common Stock | A | 195,313 | $0.00 | 1,275,490 | D | A |
| 01 Jan, 2026 | Kevin Coop | Class A Common Stock | D | 28,236 | $2.87 | 3,556,552 | D | F |
| 22 Dec, 2025 | Benjamin Graboske | Class A Common Stock | D | 341,417 | $2.53 | 676,913 | D | F |
| 22 Dec, 2025 | Benjamin Graboske | - | - | 676,913 | D | |||
| 01 Nov, 2025 | Jason Ronald Krantz | - | - | 1,060,584 | D | |||
| 01 Nov, 2025 | Jason Ronald Krantz | Class A Common Stock | D | 18,796 | $2.77 | 1,060,584 | D | F |
| 01 Nov, 2025 | Casey Heller | Class A Common Stock | D | 1,244 | $2.77 | 1,080,177 | D | F |
| 01 Oct, 2025 | Kevin Coop | Class A Common Stock | D | 37,593 | $3.56 | 3,584,788 | D | F |
| 01 Oct, 2025 | Casey Heller | Class A Common Stock | D | 8,300 | $3.56 | 1,081,421 | D | F |
| 14 Sep, 2025 | Jason Ronald Krantz | Class A Common Stock | D | 4,093 | $4.15 | 1,079,380 | D | F |
| 01 Aug, 2025 | Kate Marie Shamsuddin | - | - | 694,149 | D | |||
| 01 Aug, 2025 | Kate Marie Shamsuddin | Class A Common Stock | D | 4,741 | $3.74 | 694,149 | D | F |
| 01 Aug, 2025 | Jason Ronald Krantz | Class A Common Stock | D | 18,796 | $3.74 | 1,083,473 | D | F |
| 01 Aug, 2025 | Casey Heller | Class A Common Stock | D | 1,244 | $3.74 | 1,089,721 | D | F |
| 01 Jul, 2025 | Jonathan Paris | Class A Common Stock | A | 421,349 | $0.00 | 421,349 | D | A |
| 01 Jul, 2025 | Jonathan Paris | - | - | 421,349 | D | |||
| 01 Jul, 2025 | Kevin Coop | Class A Common Stock | D | 116,750 | $4.05 | 3,622,381 | D | F |
| 14 Jun, 2025 | Kate Marie Shamsuddin | Class A Common Stock | D | 1,012 | $3.65 | 698,890 | D | F |
| 14 Jun, 2025 | Jason Ronald Krantz | Class A Common Stock | D | 4,093 | $3.65 | 1,102,269 | D | F |
| 10 Jun, 2025 | Casey Heller | Class A Common Stock | A | 485,881 | $0.00 | 1,090,965 | D | A |