Reported relationships
Latest disclosed role at each company.
No relationships currently tracked through insider filings.
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
No balances currently tracked through insider filings.
Past disclosures · reporting ended (1)
No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.
Definitive Healthcare Corp.
Report date August 01, 2025 · Filed August 05, 2025
Section 16 reporting ended · disclosed 2025-08-05. Current position is not established by this disclosure.
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Common StockSEC Table I · non-derivative | Direct | 694,149 |
Reported balance
After 2025-08-01 transaction · row 1
1 source rowRow 1 · 2025-08-01 · Tax withholding · Disposed 4,741 · Balance 694,149 F1: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| August 01, 2025 Filed Aug 5, 2025 18:27 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 4,741 | $3.74 | $17,731.34 |
DisclosureSEC source: 0001415889-25-021085 · form4-08052025_100821.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 694,149 F1 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| June 14, 2025 Filed Jun 17, 2025 17:12 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 1,012 | $3.65 | $3,693.80 |
DisclosureSEC source: 0001415889-25-017565 · form4-06172025_090625.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 698,890 F1 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| May 01, 2025 Filed May 5, 2025 16:30 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 4,595 | $2.75 | $12,636.25 |
DisclosureSEC source: 0001415889-25-011963 · form4-05052025_040506.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 699,902 F1 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| April 28, 2025 Filed Apr 29, 2025 17:21 UTC | Definitive Healthcare Corp. DH · Entity 1538 | GrantClass A Common Stock | 243,446 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-25-011519 · form4-04292025_090446.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 704,497 F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001 (the "Class A Common Stock"), with 25% of the RSUs vesting on March 1, 2026, followed by vesting of 6.25% every three months thereafter over the subsequent three years, subject to the Reporting Person's continued service with the Issuer through each such vesting date. Read SEC document |
| March 14, 2025 Filed Mar 18, 2025 16:29 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 1,012 | $2.59 | $2,621.08 |
DisclosureSEC source: 0001415889-25-008403 · form4-03182025_080335.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 461,051 F1 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| February 01, 2025 Filed Feb 4, 2025 18:53 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 16,342 | $4.86 | $79,422.12 |
DisclosureSEC source: 0001415889-25-003033 · form4-02042025_110247.xml · nonDerivative · entry 3 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 462,063 F3 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| January 21, 2025 Filed Feb 4, 2025 18:53 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 5,331 | $4.41 | $23,509.71 |
DisclosureSEC source: 0001415889-25-003033 · form4-02042025_110247.xml · nonDerivative · entry 2 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 478,405 F2 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported PSUs. Read SEC document |
| January 21, 2025 Filed Feb 4, 2025 18:53 UTC | Definitive Healthcare Corp. DH · Entity 1538 | GrantClass A Common Stock | 56,221 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-25-003033 · form4-02042025_110247.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 483,736 F1 · shares: Reflects the number of performance-based restricted stock units ("PSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001, earned upon the certification of achievement of certain performance criteria by the Issuer's compensation committee. The PSUs will vest in three substantially equal installments as to 1/3rd on January 21, 2025, 1/3rd on February 1, 2026, and the remaining 1/3rd on February 1, 2027 and will be settled pursuant to the terms of the Issuer's 2021 Equity Incentive Plan (as amended from time to time), in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date. Read SEC document |
| December 14, 2024 Filed Dec 17, 2024 16:48 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 1,044 | $4.49 | $4,687.56 |
DisclosureSEC source: 0001415889-24-029615 · form4-12172024_091253.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 427,515 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| November 01, 2024 Filed Nov 5, 2024 16:20 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 2,506 | $4.18 | $10,475.08 |
DisclosureSEC source: 0001415889-24-026140 · form4-11052024_041106.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 428,559 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| September 29, 2024 Filed Oct 1, 2024 16:21 UTC | Definitive Healthcare Corp. DH · Entity 1538 | GrantClass A Common Stock | 113,379 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-24-024190 · form4-10012024_081011.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF OPERATING OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 431,065 F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001, with 50% of the RSUs vesting on October 1, 2025, and the remaining 50% of the RSUs vesting on October 1, 2026, in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date. Read SEC document |
| September 14, 2024 Filed Sep 17, 2024 16:15 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 1,044 | $4.44 | $4,635.36 |
DisclosureSEC source: 0001415889-24-023515 · form4-09172024_040901.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF STRATEGY OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 317,686 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| August 01, 2024 Filed Aug 5, 2024 20:00 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 2,506 | $3.95 | $9,898.70 |
DisclosureSEC source: 0001415889-24-020791 · form4-08052024_080806.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF STRATEGY OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 318,730 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| June 14, 2024 Filed Jun 18, 2024 17:06 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 1,044 | $5.62 | $5,867.28 |
DisclosureSEC source: 0001415889-24-017451 · form4-06182024_090628.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF STRATEGY OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 321,236 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| May 01, 2024 Filed May 3, 2024 16:25 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 2,506 | $6.97 | $17,466.82 |
DisclosureSEC source: 0001415889-24-012175 · form4-05032024_040506.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF STRATEGY OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 322,280 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| March 14, 2024 Filed Mar 18, 2024 16:05 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 1,044 | $8.09 | $8,445.96 |
DisclosureSEC source: 0001415889-24-008256 · form4-03182024_040303.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF PRODUCT OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 324,786 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| February 14, 2024 Filed Feb 16, 2024 16:16 UTC | Definitive Healthcare Corp. DH · Entity 1538 | GrantClass A Common Stock | 121,831 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-24-004115 · form4-02162024_040238.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF PRODUCT OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 325,830 F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001. The RSUs vest over a four-year period, with 25% of the RSUs vesting on February 1, 2025, followed by quarterly vesting of 6.25% every three months thereafter over the subsequent three years, in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date. Read SEC document |
| February 01, 2024 Filed Feb 5, 2024 16:30 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 10,121 | $8.59 | $86,939.39 |
DisclosureSEC source: 0001415889-24-002521 · form4-02052024_040206.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF PRODUCT OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 203,999 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| January 24, 2024 Filed Jan 26, 2024 17:49 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A Common Stock | 3,919 | $9.26 | $36,289.94 |
DisclosureSEC source: 0001415889-24-001883 · form4-01262024_100118.xml · nonDerivative · entry 2 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF PRODUCT OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 214,120 F2 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported PSUs. Read SEC document |
| January 24, 2024 Filed Jan 26, 2024 17:49 UTC | Definitive Healthcare Corp. DH · Entity 1538 | GrantClass A Common Stock | 33,933 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-24-001883 · form4-01262024_100118.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · CHIEF PRODUCT OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 218,039 F1 · shares: Reflects the number of performance-based restricted stock units ("PSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001, earned upon the certification of achievement of certain performance criteria by the Issuer's compensation committee. The PSUs will vest in three substantially equal installments as to 1/3rd on January 24, 2024, 1/3rd on February 1, 2025, and the remaining 1/3rd on February 1, 2026 and will be settled pursuant to the terms of the Issuer's 2021 Equity Incentive Plan (as amended from time to time), in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date. Read SEC document |
| December 14, 2023 Filed Dec 18, 2023 16:30 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A common stock | 1,044 | $9.03 | $9,427.32 |
DisclosureSEC source: 0001209191-23-058965 · doc4.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · Chief Product Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 184,106 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| September 14, 2023 Filed Sep 18, 2023 16:30 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A common stock | 1,044 | $8.27 | $8,633.88 |
DisclosureSEC source: 0001209191-23-049766 · doc4.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · Chief Product Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 185,150 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| June 14, 2023 Filed Jun 16, 2023 16:14 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A common stock | 1,044 | $10.59 | $11,055.96 |
DisclosureSEC source: 0001209191-23-037816 · doc4.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · Chief Product Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 186,194 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| March 14, 2023 Filed Mar 16, 2023 16:31 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A common stock | 1,125 | $11.89 | $13,376.25 |
DisclosureSEC source: 0001209191-23-019304 · doc4.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · Chief Product Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 187,238 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| February 16, 2023 Filed Feb 21, 2023 16:32 UTC | Definitive Healthcare Corp. DH · Entity 1538 | GrantClass A Common Stock | 136,640 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-011186 · doc4.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · Chief Product Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 188,363 F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001. The RSUs vest over a four-year period, with 25% of the RSUs vesting on February 1, 2024, followed by quarterly vesting of 6.25% every three months thereafter over the subsequent three years, in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date. F1 · price: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001. The RSUs vest over a four-year period, with 25% of the RSUs vesting on February 1, 2024, followed by quarterly vesting of 6.25% every three months thereafter over the subsequent three years, in each case subject to the Reporting Person's continued service with the Issuer through each such vesting date. Read SEC document |
| December 14, 2022 Filed Dec 16, 2022 16:30 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A common stock | 1,044 | $12.28 | $12,820.32 |
DisclosureSEC source: 0001209191-22-061664 · doc4.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · Chief Product Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 51,723 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
| September 14, 2022 Filed Sep 16, 2022 16:05 UTC | Definitive Healthcare Corp. DH · Entity 1538 | Tax withholdingClass A common stock | 4,177 | $19.45 | $81,242.65 |
DisclosureSEC source: 0001209191-22-050292 · doc4.xml · nonDerivative · entry 1 Shamsuddin Kate Marie · CIK 0001878756 · Chief Product Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 52,767 F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.