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Definitive Healthcare Corp. (DH) institutional ownership

Latest close $0.70 Jul 22, 2026
Market cap$162M 52-week range SectorHealthcare
Funds holding · Q1 2026
120
reported DH position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
59 buyers · 61 sellers

Definitive Healthcare Corp. (DH) price and institutional activity

Dates

Q1 2026

$0 bought by 59 investors
Millennium Management LLCSquarepoint Ops LLC +57 more
$0 sold by 61 investors
Morgan StanleyArrowstreet Capital, Limited Partnership +59 more
Bought Sold Totals per quarter; hover a bar for the names.

Definitive Healthcare Corp. (DH) institutional activity · 120

Investor Type Est. change Change Δ Own Date
Morgan Stanley · Reduced
Change −699K Date Q1 2026
Morgan Stanley Reduced· Q1 2026 −699K Q1 2026
Arrowstreet Capital, Limited Partnership · Reduced
Change −273K Date Q1 2026
Arrowstreet Capital, Limited Partnership Reduced· Q1 2026 −273K Q1 2026
Millennium Management LLC · Added
Change +258K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +258K Q1 2026
Dimensional · Reduced
Change −251K Date Q1 2026
Dimensional Reduced· Q1 2026 −251K Q1 2026
UBS Group AG · Reduced
Change −249K Date Q1 2026
UBS Group AG Reduced· Q1 2026 −249K Q1 2026
Squarepoint Ops LLC · New
Change +240K Date Q1 2026
Squarepoint Ops LLC New· Q1 2026 +240K Q1 2026
Jane Street Group, LLC · Reduced
Change −218K Date Q1 2026
Jane Street Group, LLC Reduced· Q1 2026 −218K Q1 2026
Geode · Added
Change +207K Date Q1 2026
Geode Added· Q1 2026 +207K Q1 2026
Acadian Asset Management LLC · Added
Change +192K Date Q1 2026
Acadian Asset Management LLC Added· Q1 2026 +192K Q1 2026
Connor, Clark & Lunn Investment Management Ltd. · Reduced
Change −184K Date Q1 2026
Connor, Clark & Lunn Investment Management Ltd. Reduced· Q1 2026 −184K Q1 2026
Verition Fund Management LLC · Exited
Change −148K Δ Own −100.0% Date Q1 2026
Verition Fund Management LLC Exited· Q1 2026 −148K −100.0% Q1 2026
Citadel Advisors LLC Added· Q1 2026 +143K +49.3% Q1 2026
Two Sigma Advisers, LP · Exited
Change −142K Δ Own −100.0% Date Q1 2026
Two Sigma Advisers, LP Exited· Q1 2026 −142K −100.0% Q1 2026
AQR Capital Management LLC · Added
Change +138K Date Q1 2026
AQR Capital Management LLC Added· Q1 2026 +138K Q1 2026
State Street · Reduced
Change −123K Date Q1 2026
State Street Reduced· Q1 2026 −123K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 120

Famous investor activity in Definitive Healthcare Corp. (DH)

Definitive Healthcare Corp. (DH) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Coop Kevin · Director Tax withholding or exercise payment (F) -$30K
Price $0.80 Qty -38K Owned 5.0M ΔOwn −0.7% Trade date Jul 1, 2026 Filed date Jul 6, 2026
Coop Kevin Director Tax withholding or exercise payment (F) $0.80 -38K -$30K 5.0M −0.7% Jul 1, 2026 Jul 6, 2026
Paris Jonathan · Officer Tax withholding or exercise payment (F) -$24K
Price $0.80 Qty -31K Owned 872K ΔOwn −3.4% Trade date Jul 1, 2026 Filed date Jul 6, 2026
Paris Jonathan Officer Tax withholding or exercise payment (F) $0.80 -31K -$24K 872K −3.4% Jul 1, 2026 Jul 6, 2026
Hamood Samuel A. · Director Grant (A) 189K
Owned 289K Trade date Jun 4, 2026 Filed date Jun 9, 2026
Hamood Samuel A. Director Grant (A) 189K 289K Jun 4, 2026 Jun 9, 2026
Stephenson Scott G. · Director Grant (A) 189K
Owned 313K Trade date Jun 4, 2026 Filed date Jun 8, 2026
Stephenson Scott G. Director Grant (A) 189K 313K Jun 4, 2026 Jun 8, 2026
Winters Kathleen A. · Director Grant (A) 189K
Owned 309K Trade date Jun 4, 2026 Filed date Jun 8, 2026
Winters Kathleen A. Director Grant (A) 189K 309K Jun 4, 2026 Jun 8, 2026
Chilukuri Sastry · Director Grant (A) 189K
Owned 316K Trade date Jun 4, 2026 Filed date Jun 8, 2026
Chilukuri Sastry Director Grant (A) 189K 316K Jun 4, 2026 Jun 8, 2026
Heller Casey · CFO Tax withholding or exercise payment (F) -$163K
Price $0.99 Qty -164K Owned 1.8M Trade date Jun 1, 2026 Filed date Jun 3, 2026
Heller Casey CFO Tax withholding or exercise payment (F) $0.99 -164K -$163K 1.8M Jun 1, 2026 Jun 3, 2026
Coop Kevin · Director Tax withholding or exercise payment (F) -$65K
Price $0.99 Qty -66K Owned 5.0M Trade date Jun 1, 2026 Filed date Jun 3, 2026
Coop Kevin Director Tax withholding or exercise payment (F) $0.99 -66K -$65K 5.0M Jun 1, 2026 Jun 3, 2026
Krantz Jason Ronald · Director Tax withholding or exercise payment (F) -$12K
Price $0.99 Qty -12K Owned 1.2M Trade date May 1, 2026 Filed date May 5, 2026
Krantz Jason Ronald Director Tax withholding or exercise payment (F) $0.99 -12K -$12K 1.2M May 1, 2026 May 5, 2026
Heller Casey · CFO Tax withholding or exercise payment (F) -$1K
Price $0.99 Qty -1K Owned 2.0M Trade date May 1, 2026 Filed date May 5, 2026
Heller Casey CFO Tax withholding or exercise payment (F) $0.99 -1K -$1K 2.0M May 1, 2026 May 5, 2026
Coop Kevin · Director Tax withholding or exercise payment (F) -$41K
Price $1.09 Qty -38K Owned 5.1M Trade date Apr 1, 2026 Filed date Apr 3, 2026
Coop Kevin Director Tax withholding or exercise payment (F) $1.09 -38K -$41K 5.1M Apr 1, 2026 Apr 3, 2026
Krantz Jason Ronald · Director Tax withholding or exercise payment (F) -$49K
Price $1.09 Qty -45K Owned 1.2M Trade date Apr 1, 2026 Filed date Apr 3, 2026
Krantz Jason Ronald Director Tax withholding or exercise payment (F) $1.09 -45K -$49K 1.2M Apr 1, 2026 Apr 3, 2026
Coop Kevin · Director, Officer Tax withholding or exercise payment (F) -$225K
Price $1.28 Qty -176K Owned 5.1M Trade date Mar 1, 2026 Filed date Mar 3, 2026
Coop Kevin Director, Officer Tax withholding or exercise payment (F) $1.28 -176K -$225K 5.1M Mar 1, 2026 Mar 3, 2026
Graboske Benjamin · Officer Grant (A) 631K
Owned 1.3M Trade date Feb 24, 2026 Filed date Feb 26, 2026
Graboske Benjamin Officer Grant (A) 631K 1.3M Feb 24, 2026 Feb 26, 2026
Paris Jonathan · Officer Grant (A) 482K
Owned 903K Trade date Feb 24, 2026 Filed date Feb 26, 2026
Paris Jonathan Officer Grant (A) 482K 903K Feb 24, 2026 Feb 26, 2026
15 of 31
15 of 31 Sign in to continue to older insider transactions.

Definitive Healthcare Corp. (DH) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Advent International, L.P. 62.5M
% of shares outstanding 59.8% Filing date May 14, 2026
Advent International, L.P. 62.5M 59.8% May 14, 2026
Advent International, L.P. 62.5M
% of shares outstanding 53.7% Filing date Feb 14, 2024
Advent International, L.P. 62.5M 53.7% Feb 14, 2024
Krantz Jason Ronald 21.8M
% of shares outstanding 15.8% Filing date Feb 13, 2024
Krantz Jason Ronald 21.8M 15.8% Feb 13, 2024
Sea VII Management, LLC 13.8M
% of shares outstanding 10.6% Filing date Feb 9, 2024
Sea VII Management, LLC 13.8M 10.6% Feb 9, 2024
Irenic Capital Management LP 6.4M
% of shares outstanding 5.5% Filing date Oct 3, 2024
Irenic Capital Management LP 6.4M 5.5% Oct 3, 2024
Massachusetts Financial Services Co 6.1M
% of shares outstanding 5.2% Filing date Nov 12, 2024
Massachusetts Financial Services Co 6.1M 5.2% Nov 12, 2024
Conestoga Capital Advisors, LLC 5.8M
% of shares outstanding 5.0% Filing date Jan 5, 2024
Conestoga Capital Advisors, LLC 5.8M 5.0% Jan 5, 2024
Echo Street Capital Management LLC
% of shares outstanding 0.0% Filing date Feb 8, 2024
Echo Street Capital Management LLC 0.0% Feb 8, 2024
8 of 8

Definitive Healthcare Corp. (DH) ownership FAQ

Who owns DH?

120 reporting institutions disclosed DH position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.