🕵️ Definitive Healthcare Corp. ($DH)
SEC insider & ownership activity, last 12 months · CIK 1861795 · every row links its SEC filing
Insiders were quiet over the last 12 months – no open-market buys or sells. One red-flag 8-K in the window: Delisting notice (3.01), Jun 18, 2026.
Insider flow
0 buyers, $0 (0 lots) · 0 sellers, $0 (0 lots)
No open-market insider transactions in the last 12 months.
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Advent International GP, LLC | 58.5% | Class A | 13D | Sep 1, 2026 | filing ↗ |
| Advent International, L.P. | 58.5% | Class A | 13D | Sep 1, 2026 | filing ↗ |
| Advent International, L.P. | 54.8% | 13G | May 15, 2025 | filing ↗ | |
| Advent International GPE IX, LLC | 43.1% | 13G | May 15, 2025 | filing ↗ | |
| GPE IX GP Limited Partnership | 34.0% | 13G | May 15, 2025 | filing ↗ | |
| Jason Ronald Krantz | 17.6% | Class A | 13D | Sep 1, 2026 | filing ↗ |
| Advent International GPE IX Limited Partnership | 15.9% | Class A | 13D | Sep 1, 2026 | filing ↗ |
| Advent Global Technology LLC | 11.8% | 13G | May 15, 2025 | filing ↗ | |
| Advent Global Technology GP Limited Partnership | 9.6% | 13G | May 15, 2025 | filing ↗ | |
| GPE IX GP S.A R.L | 7.7% | 13G | May 15, 2025 | filing ↗ | |
| The Goldman Sachs Group, Inc. | 5.7% | 13G | Feb 9, 2026 | filing ↗ | |
| Goldman Sachs & Co. LLC | 5.7% | 13G | Feb 9, 2026 | filing ↗ | |
| Advent International GPE IX-H Limited Partnership | 5.1% | Class A | 13D | Sep 1, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | Sep 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 9, 2026 | filing ↗ |
| Other events (8.01) | Sep 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 2, 2026 | filing ↗ |
| Officer/director changes (5.02) | Aug 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 28, 2026 | filing ↗ |
| Earnings (2.02) | Aug 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 10, 2026 | filing ↗ |
| Delisting notice (3.01) | Jun 18, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 4, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Agreement terminated (1.02) | Apr 3, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 30, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |