SEC Insider Transactions from Shea Thomas Anthony.

Last updated: 2026-04-02 23:06 UTC | Total transactions: 24

Shea Thomas Anthony, CEO and President of OneStream Inc. ($OS), made one open market sale of company shares in the last 365 days, totaling nearly $280,000. His most recent transaction occurred on June 11, 2025. With no open market purchases recorded, his sales rank 7,709th among 11,678 insiders, well below the average sale amount of $8.6 million across 6.4 transactions.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Stock Option (right to buy) 92992 $0.00 0.0000 242,755,313 100.00% 0.04%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Class A Common Stock 379963 $0.00 0.0000 242,755,313 100.00% 0.16%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Common Units 325232 $0.00 0.0000 242,755,313 100.00% 0.13%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Class D Common Stock 4313836 $0.00 0.0000 242,755,313 100.00% 1.78%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Class D Common Stock 2814351 $0.00 0.0000 242,755,313 100.00% 1.16%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Class D Common Stock 9041667 $0.00 0.0000 242,755,313 100.00% 3.72%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Stock Option (right to buy) 619835 $0.00 0.0000 242,755,313 100.00% 0.26%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Stock Option (right to buy) 504472 $0.00 0.0000 242,755,313 100.00% 0.21%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Stock Option (right to buy) 149979 $0.00 0.0000 242,755,313 100.00% 0.06%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Stock Option (right to buy) 473008 $0.00 0.0000 242,755,313 100.00% 0.19%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Stock Option (right to buy) 435161 $0.00 0.0000 242,755,313 100.00% 0.18%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Stock Option (right to buy) 55795 $0.00 0.0000 242,755,313 100.00% 0.02%
April 1, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO D Class A Common Stock 80023 $0.00 0.0000 242,755,313 100.00% 0.03%
March 24, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO G Class D Common Stock 4330215 $0.00 20,500,069.0000 242,755,313 26.78% 1.78%
March 25, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO G Class D Common Stock 4330215 $0.00 20,500,069.0000 242,755,313 26.78% 1.78%
March 25, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO G Class D Common Stock 4330215 $0.00 8,644,051.0000 242,755,313 33.38% 1.78%
March 24, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO G Class D Common Stock 4330215 $0.00 8,644,051.0000 242,755,313 33.38% 1.78%
March 10, 2026 OneStream, Inc. $OS Shea Thomas Anthony CEO F Class A Common Stock 9258 $23.70 459,986.0000 242,755,313 1.97% 0.00%
Dec. 10, 2025 OneStream, Inc. $OS Shea Thomas Anthony CEO and President F Class A Common Stock 13805 $18.38 469,244.0000 242,755,313 2.86% 0.01%
Sept. 10, 2025 OneStream, Inc. $OS Shea Thomas Anthony CEO and President F Class A Common Stock 13805 $19.79 483,049.0000 236,510,211 2.78% 0.01%
June 10, 2025 OneStream, Inc. $OS Shea Thomas Anthony CEO and President C Class A Common Stock 150 $0.00 506,767.0000 236,510,211 0.03% 0.00%
June 10, 2025 OneStream, Inc. $OS Shea Thomas Anthony CEO and President C Class D Common Stock 150 $0.00 16,169,854.0000 236,510,211 0.00% 0.00%
June 11, 2025 OneStream, Inc. $OS Shea Thomas Anthony CEO and President S Class A Common Stock 9913 $28.23 496,854.0000 236,510,211 1.96% 0.00%
March 10, 2025 OneStream, Inc. $OS Shea Thomas Anthony Chief Executive Officer A Class A Common Stock 506617 $0.00 506,617.0000 236,510,211 9999.99% 0.21%