Koefoed William A Insider Trading Activity
Koefoed William A has been net-selling over the last 12 months with 0 purchases and 3 sales across 1 company.
OS is the most-traded position with 3 trades. The largest single transaction was a sale of OS for $625K on Jul 25, 2025.
Performance Scorecard
Forward stock performance after each transaction by Koefoed William A. 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 | — | +4.3% | 86% | 7 |
| 90 days | — | +18.0% | 86% | 7 |
| 120 days | — | +21.6% | 83% | 6 |
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 |
|---|---|---|---|---|---|---|---|---|
Dec 15, 2025 | OS | Sell | 9,571 | $17.73 | $170K | −4.4% | CFO | |
Sep 15, 2025 | OS | Sell | 8,943 | $19.03 | $170K | −3.9% | CFO | |
Jul 25, 2025 | OS | Sell | 25,000 | $25.00 | $625K | −9.5% | CFO | |
Jun 25, 2025 | OS | Sell | 25,000 | $26.77 | $669K | −9.5% | CFO | |
Jun 16, 2025 | OS | Sell | 9,354 | $27.90 | $261K | −3.8% | CFO | |
Jun 11, 2025 | OS | Sell | 6,501 | $28.23 | $184K | −2.6% | CFO | |
May 27, 2025 | OS | Sell | 25,000 | $28.76 | $719K | −9.0% | CFO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| OS | OneStream, Inc. | 7 | $2.8M |
Other insiders at OneStream, Inc.
3 other tracked filers at OS.