Koefoed William A (CIK 1642337) reported 17 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2025-12-16). Recent activity: Sell OS (9,571 shares), Sell OS (6,285 shares), Sell OS (8,943 shares), Sell OS (6,913 shares), Buy OS (25,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-16 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 9,571 | $169,694 |
| 2025-12-12 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 6,285 | $115,518 |
| 2025-09-16 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 8,943 | $170,185 |
| 2025-09-12 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 6,913 | $136,808 |
| 2025-07-28 | OneStream, Inc. (OS) | Chief Financial Officer | Buy | 25,000 | $266,250 |
| 2025-07-28 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 25,000 | $625,000 |
| 2025-06-27 | OneStream, Inc. (OS) | Chief Financial Officer | Buy | 25,000 | $266,250 |
| 2025-06-27 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 25,000 | $669,250 |
| 2025-06-18 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 9,354 | $260,977 |
| 2025-06-12 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 6,501 | $183,523 |
| 2025-05-29 | OneStream, Inc. (OS) | Chief Financial Officer | Buy | 25,000 | $266,250 |
| 2025-05-29 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 25,000 | $719,000 |
| 2025-03-12 | OneStream, Inc. (OS) | Chief Financial Officer | Buy | 253,694 | $0 |
| 2025-02-20 | OneStream, Inc. (OS) | Chief Financial Officer | Buy | 10,000 | $106,500 |
| 2025-02-20 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 10,000 | $250,400 |
| 2025-01-17 | OneStream, Inc. (OS) | Chief Financial Officer | Buy | 10,000 | $106,500 |
| 2025-01-17 | OneStream, Inc. (OS) | Chief Financial Officer | Sell | 10,000 | $265,700 |
Source: SEC Form 4 filings · as of 2025-12-16