Thomas Anthony Shea

Insider Reports History

Reporting-owner location: Rochester, MI
Latest reporting-owner signature: /s/ Holly Koczot, attorney-in-fact
Transaction source note: Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Thomas Anthony Shea

Form 4 holding CEO, Director, 10%+ Owner

OneStream, Inc.

Security class: Class D Common Stock
Shares / value: 0
Estimated value: $279,090,663
Report date: 01 Apr 2026
Price: $23.54
Ownership: Indirect
Underlying class: Class A Common Stock
Underlying amount: 11,856,018

Form 4 holding CEO, Director, 10%+ Owner

OneStream, Inc.

Security class: Class D Common Stock
Shares / value: 0
Estimated value: $101,547,699
Report date: 01 Apr 2026
Price: $23.54
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 4,313,836

Form 4 holding CEO, Director, 10%+ Owner

OneStream, Inc.

Security class: Class A Common Stock
Shares / value: 0
Estimated value: $0
Report date: 01 Apr 2026
Price: $18.38
Ownership: Direct

Form 4 holding CEO, Director, 10%+ Owner

OneStream, Inc.

Security class: Common Units
Shares / value: 0
Estimated value
Report date: 01 Apr 2026
Price
Ownership: Indirect
Underlying class: Class D Common Stock
Underlying amount

Form 4 holding CEO, Director, 10%+ Owner

OneStream, Inc.

Security class: Stock Option (right to buy)
Shares / value: 0
Estimated value
Report date: 01 Apr 2026
Price
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount

Insider Reports Filed by Thomas Anthony Shea

4/A OS

OneStream, Inc.

Report period: 01 Apr 2026
Transactions: 13
Transaction value: $0
Accepted by SEC: 03 Apr 2026, 19:28
Role: CEO, Director, 10%+ Owner
Next action: Open filing details

4 OS

OneStream, Inc.

Report period: 24 Mar 2026
Transactions: 4
Transaction value: $0
Accepted by SEC: 26 Mar 2026, 19:14
Role: CEO, Director, 10%+ Owner
Next action: Open filing details

4 OS

OneStream, Inc.

Report period: 10 Mar 2026
Transactions: 1
Transaction value: $0
Accepted by SEC: 12 Mar 2026, 16:33
Role: CEO, Director, 10%+ Owner
Next action: Open filing details

4 OS

OneStream, Inc.

Report period: 10 Dec 2025
Transactions: 1
Transaction value: -$253,736
Accepted by SEC: 12 Dec 2025, 16:09
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 OS

OneStream, Inc.

Report period: 10 Sep 2025
Transactions: 1
Transaction value: -$273,201
Accepted by SEC: 12 Sep 2025, 16:29
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 OS

OneStream, Inc.

Report period: 10 Jun 2025
Transactions: 3
Transaction value: -$279,844
Accepted by SEC: 12 Jun 2025, 16:54
Role: CEO and President, Director, 10%+ Owner
Next action: Open filing details

4 OS

OneStream, Inc.

Report period: 10 Mar 2025
Transactions: 1
Transaction value: $0
Accepted by SEC: 12 Mar 2025, 17:21
Role: Chief Executive Officer, Director, 10%+ Owner
Next action: Open filing details

3 OS

OneStream, Inc.

Report period: 24 Jul 2024
Transactions: 0
Transaction value: $0
Accepted by SEC: 24 Jul 2024, 20:32
Role: Chief Executive Officer, Director
Next action: Open filing details

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