| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Financial Officer
1 company
Koefoed William A is a Chief Financial Officer at OS. Recent filings cover 0 purchases and 12 sales. Those positions are worth an estimated $3.7M at current prices.
Our model assigns Koefoed William A a strong insider score of 77/100, based on 11 past trades. Over a 12-month horizon, 100.0% of those trades were profitable, with an average 12-month return of +17.1%.
Koefoed William A's largest disclosed position is in OS as Chief Financial Officer, worth about $3.7M. The recent filings there lean toward selling, a net 163,134 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 15, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sell10b5-1 | 9,571 | $17.73 | $169,693.83 | -4.4% | +39.0% | - | |
| Sep 15, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sell10b5-1 | 8,943 | $19.03 | $170,185.29 | -3.9% | -8.3% | - | |
| Jul 25, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sale+OE10b5-1 | 25,000 | $25.00 | $625,000.00 | -9.5% | -27.9% | - | |
| Jun 25, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sale+OE10b5-1 | 25,000 | $26.77 | $669,250.00 | -9.5% | -24.0% | - | |
| Jun 16, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sell10b5-1 | 9,354 | $27.90 | $260,976.60 | -3.8% | -34.4% | - | |
| Jun 11, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sell | 6,501 | $28.23 | $183,523.23 | -2.6% | -30.3% | - | |
| May 27, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sale+OE10b5-1 | 25,000 | $28.76 | $719,000.00 | -9.0% | -31.7% | - | |
| Feb 18, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sale+OE10b5-1 | 10,000 | $25.04 | $250,400.00 | - | +11.8% | -6.6% | |
| Jan 15, 2025 | OS Onestream, Inc. | Chief Financial Officer | Sale+OE10b5-1 | 10,000 | $26.57 | $265,700.00 | - | -30.2% | -15.4% | |
| Dec 13, 2024 | OS Onestream, Inc. | Chief Financial Officer | Sale+OE10b5-1 | 13,765 | $30.00 | $412,917.25 | - | -30.0% | -39.0% |