Jonathan D Mariner Insider Trading Activity

Corporate InsiderDirector · CIK 1063663

7

Total trades

$1.1M

Total volume

Jan 6, 2026

Last activity

OS

OneStream, Inc.

Jonathan D Mariner has been net-selling over the last 12 months with 0 purchases and 6 sales across 1 company.

OS is the most-traded position with 6 trades. The largest single transaction was a sale of OS for $385K on Dec 2, 2025.

Performance Scorecard

Forward stock performance after each transaction by Jonathan D Mariner. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIODAVG BUY RETURNAVG SELL AVOIDEDSUCCESS RATETRADES
30 days+7.6%86%7
90 days+11.7%60%5
120 days+21.9%100%4

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

Pro: Trade Markers

OS · OneStream, Inc.

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Recent Trades

DATETICKERTYPESHARESPRICEVALUEROLE
Jan 6, 2026OSSell2,415$22.66$55KDirector
Jan 6, 2026OSSell5,541$23.59$131KDirector
Dec 2, 2025OSSell18,423$20.90$385KDirector
Sep 3, 2025OSSell141$20.07$3KDirector
Aug 4, 2025OSSell6,630$23.53$156KDirector
Jul 7, 2025OSSell6,630$26.59$176KDirector
Jun 2, 2025OSSell6,631$27.90$185KDirector

Top Companies Traded

TICKERCOMPANYTRADESTOTAL VOLUME
OSOneStream, Inc.7$1.1M

Other insiders at OneStream, Inc.

3 other tracked filers at OS.