ADVENT INTERNATIONAL, L.P. - 31 Mar 2025 SCHEDULE 13G/A Report for Definitive Healthcare Corp. Class A Common Stock, $0.001 par value (DH)

Filing manager
ADVENT INTERNATIONAL, L.P.
Reporting owner
ADVENT INTERNATIONAL, L.P.
Security
Definitive Healthcare Corp. Class A Common Stock, $0.001 par value
Beneficially owned shares
58,869,889 shares
Ownership signal CIK-linked ownership evidence from parsed SEC filings. 2 signals
Large-stake signal

Form

SCHEDULE 13G/A

Passive or exempt beneficial ownership filing.

Ownership

55%

Beneficial ownership of this reported class.

Shares

58,869,889 shares

Shares beneficially owned as disclosed.

Event date

31 Mar 2025

Date tied to the ownership event or amendment.

Accepted by SEC

15 May 2025

EDGAR acceptance date.

How to read this large-stake filing
  • Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
  • Compare this filing with the holder history and issuer page before treating the percentage as a current position.
  • Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Class ownership
55%
Subject security Names, identifiers, and filing context for this profile. 2 source fields
Symbol
DH
Shares outstanding
107,348,448 shares
Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
SCHEDULE 13G/A
Accepted by SEC
15 May 2025, 16:36:54 UTC
Event date
31 Mar 2025
Next SEC filing
14 May 2026
Source filing
View source filing

Key filing fact

ADVENT INTERNATIONAL, L.P. disclosed 55% ownership in Definitive Healthcare Corp. Class A Common Stock, $0.001 par value (DH) on 31 Mar 2025.

Key facts

  • ADVENT INTERNATIONAL, L.P. filed SCHEDULE 13G/A for Definitive Healthcare Corp. Class A Common Stock, $0.001 par value (DH).
  • Disclosed ownership: 55%.
  • Date of event: 31 Mar 2025.

Change

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 15 May 2025, 16:36.

Research use

  • This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
  • Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

View source filing

Reporting persons

Disclosed reporting parties (39)

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name Ownership Shares owned Sole voting power Shared voting power Signature Title CIK
ADVENT INTERNATIONAL, L.P. 55% 58,869,889 58,869,889 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GP, LLC 55% 58,869,889 58,869,889 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance
Advent International GPE IX, LLC 43% 46,251,909 46,251,909 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
GPE IX GP Limited Partnership 34% 36,492,659 36,492,659 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GPE IX Limited Partnership 16% 16,955,510 16,955,510 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GPE IX-B Limited Partnership 3.1% 3,359,809 3,359,809 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GPE IX-C Limited Partnership 1.3% 1,394,766 1,394,766 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GPE IX-F Limited Partnership 1.4% 1,463,380 1,463,380 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GPE IX-G Limited Partnership 4.5% 4,815,226 4,815,226 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GPE IX-H Limited Partnership 5.1% 5,428,915 5,428,915 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent International GPE IX-I Limited Partnership 2.9% 3,075,053 3,075,053 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
GPE IX GP S.a r.l 7.7% 8,301,241 8,301,241 0 /s/ Justin Nuccio Justin Nuccio / Manager, See Exhibit 99.2
Advent International GPE IX-A SCSp 4.6% 4,985,850 4,985,850 0 /s/ Justin Nuccio Justin Nuccio / Manager, See Exhibit 99.2
Advent International GPE IX-D SCSp 0.99% 1,061,241 1,061,241 0 /s/ Justin Nuccio Justin Nuccio / Manager, See Exhibit 99.2
Advent International GPE IX-E SCSp 2% 2,156,723 2,156,723 0 /s/ Justin Nuccio Justin Nuccio / Manager, See Exhibit 99.2
Advent International GPE IX Strategic Investors SCSp 0.09% 97,427 97,427 0 /s/ Justin Nuccio Justin Nuccio / Manager, See Exhibit 99.2
AP GPE IX GP Limited Partnership 1.4% 1,458,009 1,458,009 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners GPE IX Limited Partnership 0.05% 55,642 55,642 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners GPE IX-A Limited Partnership 0.12% 128,669 128,669 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners GPE IX-C Limited Partnership 0.3% 321,070 321,070 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners GPE IX-A Cayman Limited Partnership 0.05% 54,121 54,121 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners GPE IX-B Cayman Limited Partnership 0.84% 898,507 898,507 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology LLC 12% 12,617,980 12,617,980 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology GP Limited Partnership 9.6% 10,326,106 10,326,106 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology Limited Partnership 3.6% 3,818,770 3,818,770 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology-B Limited Partnership 2.8% 2,971,879 2,971,879 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology-C Limited Partnership 1.5% 1,609,070 1,609,070 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology-D Limited Partnership 1.8% 1,926,387 1,926,387 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology GP S.a r.l. 1.8% 1,885,069 1,885,069 0 /s/ Justin Nuccio Justin Nuccio / Manager, See Exhibit 99.2
Advent Global Technology-A SCSP 1.8% 1,885,069 1,885,069 0 /s/ Justin Nuccio Justin Nuccio / Manager, See Exhibit 99.2
AP AGT GP Limited Partnership 0.38% 406,805 406,805 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners AGT Limited Partnership 0.03% 31,561 31,561 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners AGT-A Limited Partnership 0.03% 27,373 27,373 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Partners AGT-C Limited Partnership 0.3% 317,329 317,329 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Technology Strategic Investors Limited Partnership 0.03% 30,542 30,542 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Opportunities Management LLC 3.4% 3,623,787 3,623,787 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Opportunities GP LLC 3.4% 3,623,787 3,623,787 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Opportunities GP LP 3.4% 3,623,787 3,623,787 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
Advent Global Opportunities Master Limited Partnership 3.4% 3,623,787 3,623,787 0 /s/ Neil Crawford Neil Crawford / Vice President of Finance, See Exhibit 99.2
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