DH

DH · Definitive Healthcare Corp. Class A Common Stock

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October 2, 2026

Definitive Healthcare Joins Network Advertising Initiative. Definitive Healthcare announced it has joined the Network Advertising Initiative, a group that promotes privacy standards for online advertising. The move is intended to strengthen the company’s data privacy compliance in its healthcare marketing activities. This step may help reassure clients and partners about how patient data is handled during digital campaigns.

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Insiders & Stakes

ADVENT INTERNATIONAL CORP/MA62,493,676
Shares held
Egan Christopher62,493,676
Shares held
Young Lauren62,493,676
Shares held
Kevin Coop
Chief Executive Officer
4,975,229
Shares held
Casey Heller
Chief Financial Officer
1,785,960
Shares held
SEA VII Management, LLC
Director
1,441,657
Shares held
Benjamin Graboske
EVP, Chief Data Officer
1,312,027
Shares held
Robert W. Musslewhite
Director
1,201,638
Shares held
Jason Ronald Krantz
Director
1,189,272
Shares held
Jonathan Paris
Chief Legal Officer
864,534
Shares held
Maack Jonathan
President
699,650
Shares held
Kate Marie Shamsuddin
Chief Product Officer
694,149
Shares held
Richard Douglas Booth
Chief Financial Officer
652,630
Shares held
Moschella William
Chief Product & Tech Officer
451,302
Shares held
Lazorchak Carrie
Chief Revenue Officer
421,528
Shares held
Sastry Chilukuri
Director
315,984
Shares held
Scott G. Stephenson
CEO and President
313,314
Shares held
Kathleen A. Winters
Director
308,982
Shares held
Samuel A. Hamood
Director
289,396
Shares held
Mitchell Christopher
Director
226,126
Shares held
Mirisola Joseph Gianni
Chief Revenue Officer
185,198
Shares held
Larsen Jill
Director
114,751
Shares held
Haywood Jeffrey Charles
Director
41,934
Shares held
Samuels David M
Chief Legal Officer
23,167
Shares held
Winn David Randall
Director
0
Shares held

Transaction History

Casey Heller▼ Sell$12K
Jonathan Paris▼ Sell$7K
Casey Heller▼ Sell$37K
Casey Heller▼ Sell$1K
Jason Ronald Krantz▼ Sell$8K
Kevin Coop▼ Sell$30K
Jonathan Paris▼ Sell$24K
Samuel A. Hamood▲ Buy$0
Scott G. Stephenson▲ Buy$0
Kathleen A. Winters▲ Buy$0
Sastry Chilukuri▲ Buy$0
Casey Heller▼ Sell$163K
Kevin Coop▼ Sell$65K
Jason Ronald Krantz▼ Sell$12K
Casey Heller▼ Sell$1K
Kevin Coop▼ Sell$41K
Jason Ronald Krantz▼ Sell$49K
Kevin Coop▼ Sell$225K
Benjamin Graboske▲ Buy$0
Jonathan Paris▲ Buy$0
Casey Heller▲ Buy$0
Kevin Coop▲ Buy$0
Jason Ronald Krantz▲ Buy$0
Jason Ronald Krantz▼ Sell$103K
Casey Heller▼ Sell$3K
Casey Heller▲ Buy$0
Kevin Coop▼ Sell$81K
Benjamin Graboske▼ Sell$864K
Jason Ronald Krantz▼ Sell$52K
Casey Heller▼ Sell$3K
Casey Heller▼ Sell$30K
Kevin Coop▼ Sell$134K
Jason Ronald Krantz▼ Sell$17K
Casey Heller▼ Sell$5K
Kate Marie Shamsuddin▼ Sell$18K
Jason Ronald Krantz▼ Sell$70K
Kevin Coop▼ Sell$473K
Jonathan Paris▲ Buy$0
Kate Marie Shamsuddin▼ Sell$4K
Jason Ronald Krantz▼ Sell$15K
Casey Heller▲ Buy$0
Sastry Chilukuri▲ Buy$0
Kathleen A. Winters▲ Buy$0
Larsen Jill▲ Buy$0
Scott G. Stephenson▲ Buy$0
Samuel A. Hamood▲ Buy$0
Casey Heller▲ Buy$0
Jason Ronald Krantz▼ Sell$52K
Kate Marie Shamsuddin▼ Sell$13K
Richard Douglas Booth▼ Sell$22K
Kate Marie Shamsuddin▲ Buy$0
Jason Ronald Krantz▲ Buy$0
Kate Marie Shamsuddin▼ Sell$3K
Jason Ronald Krantz▼ Sell$11K
Richard Douglas Booth▼ Sell$2K
Benjamin Graboske▲ Buy$0
Kevin Coop▲ Buy$0
Jason Ronald Krantz▲ Buy$0
Jason Ronald Krantz▼ Sell$41K
Moschella William▼ Sell$139K
Kate Marie Shamsuddin▼ Sell$79K
Jason Ronald Krantz▼ Sell$277K
Richard Douglas Booth▼ Sell$132K
Moschella William▲ Buy$0
Moschella William▼ Sell$30K
Kate Marie Shamsuddin▲ Buy$0
Kate Marie Shamsuddin▼ Sell$24K
Jason Ronald Krantz▲ Buy$0
Jason Ronald Krantz▼ Sell$100K
Richard Douglas Booth▲ Buy$0
Richard Douglas Booth▼ Sell$45K
Moschella William▼ Sell$55K
Jason Ronald Krantz▼ Sell$18K
Kate Marie Shamsuddin▼ Sell$5K
Richard Douglas Booth▼ Sell$7K
Moschella William▼ Sell$212K
Richard Douglas Booth▲ Buy$0
Moschella William▼ Sell$15K
Richard Douglas Booth▼ Sell$16K
Kate Marie Shamsuddin▼ Sell$10K
Jason Ronald Krantz▼ Sell$33K
Kate Marie Shamsuddin▲ Buy$0
Kate Marie Shamsuddin▼ Sell$5K
Richard Douglas Booth▼ Sell$4K
Jason Ronald Krantz▼ Sell$18K
Moschella William▼ Sell$57K
Richard Douglas Booth▼ Sell$14K
Kate Marie Shamsuddin▼ Sell$10K
Jason Ronald Krantz▼ Sell$30K
Kevin Coop▲ Buy$0
Kevin Coop▲ Buy$0
Richard Douglas Booth▼ Sell$6K
Kate Marie Shamsuddin▼ Sell$6K
Jason Ronald Krantz▼ Sell$22K
Samuel A. Hamood▲ Buy$0
Kathleen A. Winters▲ Buy$0
Sastry Chilukuri▲ Buy$0
Scott G. Stephenson▲ Buy$0
Larsen Jill▲ Buy$0
Maack Jonathan▼ Sell$70K
Moschella William▲ Buy$0
Richard Douglas Booth▼ Sell$25K
Kate Marie Shamsuddin▼ Sell$17K
Jason Ronald Krantz▼ Sell$53K
Richard Douglas Booth▼ Sell$8K
Kate Marie Shamsuddin▼ Sell$8K
Jason Ronald Krantz▼ Sell$23K
Jason Ronald Krantz▼ Sell$54K
Jason Ronald Krantz▲ Buy$0
Kate Marie Shamsuddin▲ Buy$0
Maack Jonathan▲ Buy$0
Lazorchak Carrie▲ Buy$0
Richard Douglas Booth▲ Buy$0
Maack Jonathan▼ Sell$92K
Jason Ronald Krantz▼ Sell$172K
Richard Douglas Booth▼ Sell$123K
Kate Marie Shamsuddin▼ Sell$87K
Richard Douglas Booth▲ Buy$0
Kate Marie Shamsuddin▲ Buy$0
Kate Marie Shamsuddin▼ Sell$36K
Richard Douglas Booth▼ Sell$52K
Jason Ronald Krantz▲ Buy$0
Jason Ronald Krantz▼ Sell$109K
Robert W. Musslewhite▼ Sell$128K
Richard Douglas Booth▼ Sell$9K
Kate Marie Shamsuddin▼ Sell$9K
Jason Ronald Krantz▼ Sell$24K
Robert W. Musslewhite▼ Sell$92K
Maack Jonathan▼ Sell$297K
Lazorchak Carrie▲ Buy$0
Robert W. Musslewhite▼ Sell$144K
Jason Ronald Krantz▼ Sell$22K
Kate Marie Shamsuddin▼ Sell$9K
Richard Douglas Booth▼ Sell$8K
Mirisola Joseph Gianni▼ Sell$9K
Scott G. Stephenson▲ Buy$0
Scott G. Stephenson▲ Buy$0
SEA VII Management, LLC▼ Sell$23K
SEA VII Management, LLC▼ Sell$39K
Haywood Jeffrey Charles▼ Sell$0
Mitchell Christopher▼ Sell$0
SEA VII Management, LLC▼ Sell$0
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell—
Robert W. Musslewhite▼ Sell$143K
Robert W. Musslewhite▼ Sell$214K
Mirisola Joseph Gianni▼ Sell$11K
Kate Marie Shamsuddin▼ Sell$11K
Richard Douglas Booth▼ Sell$11K
Jason Ronald Krantz▼ Sell$28K
Samuel A. Hamood▲ Buy$0
Larsen Jill▲ Buy$0
Kathleen A. Winters▲ Buy$0
Sastry Chilukuri▲ Buy$0
SEA VII Management, LLC▼ Sell$0
SEA VII Management, LLC▼ Sell$21K
SEA VII Management, LLC▼ Sell$36K
Haywood Jeffrey Charles▼ Sell$0
Mitchell Christopher▼ Sell$0
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell—
Robert W. Musslewhite▼ Sell$531K
Robert W. Musslewhite▼ Sell$163K
Jason Ronald Krantz▼ Sell$31K
Mirisola Joseph Gianni▼ Sell$13K
Richard Douglas Booth▼ Sell$12K
Kate Marie Shamsuddin▼ Sell$13K
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell$33.4M
Mirisola Joseph Gianni▲ Buy$0
Kate Marie Shamsuddin▲ Buy$0
Robert W. Musslewhite▲ Buy$0
Richard Douglas Booth▲ Buy$0
Jason Ronald Krantz▲ Buy$0
Robert W. Musslewhite▼ Sell$146K
Jason Ronald Krantz▼ Sell$48K
Richard Douglas Booth▼ Sell$12K
Kate Marie Shamsuddin▼ Sell$13K
Mirisola Joseph Gianni▼ Sell$13K
Jason Ronald Krantz▲ Buy$5.2M
Maack Jonathan▲ Buy$0
Robert W. Musslewhite▼ Sell$1.0M
Sastry Chilukuri▲ Buy$0
Mirisola Joseph Gianni▼ Sell$81K
Kate Marie Shamsuddin▼ Sell$81K
Richard Douglas Booth▼ Sell$77K
Samuels David M▼ Sell$36K
Jason Ronald Krantz▼ Sell$206K
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell$23.1M
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell—
SEA VII Management, LLC▼ Sell$26.9M
Winn David Randall▼ Sell—
Winn David Randall▼ Sell—
Winn David Randall▼ Sell$5.9M
Winn David Randall▼ Sell$46.8M
Winn David Randall▼ Sell$138K

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