Jonathan D Mariner Insider Trading Activity
Jonathan D Mariner has been net-selling over the last 12 months with 0 purchases and 5 sales across 1 company.
OS is the most-traded position with 5 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.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 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 MarkersOS · OneStream, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Jan 6, 2026 | OS | Sell | 2,415 | $22.66 | $55K | −16.0% | Director | |
Jan 6, 2026 | OS | Sell | 5,541 | $23.59 | $131K | −43.7% | Director | |
Dec 2, 2025 | OS | Sell | 18,423 | $20.90 | $385K | −55.0% | Director | |
Sep 3, 2025 | OS | Sell | 141 | $20.07 | $3K | −0.4% | Director | |
Aug 4, 2025 | OS | Sell | 6,630 | $23.53 | $156K | −16.5% | Director | |
Jul 7, 2025 | OS | Sell | 6,630 | $26.59 | $176K | −14.1% | Director | |
Jun 2, 2025 | OS | Sell | 6,631 | $27.90 | $185K | −12.4% | Director |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| OS | OneStream, Inc. | 7 | $1.1M |
Other insiders at OneStream, Inc.
3 other tracked filers at OS.