Koefoed William A insider trades
Koefoed William A has filed 14 Form 4s with the SEC that we hold, all for OS, as Chief Financial Officer. Across all of them we count 0 purchases worth $0 and 12 sales worth $4.1M reported on Form 4. In the last 12 months: 0 purchases ($0) and 1 sale ($169.7K). The largest single trade was a sale of 25,000 shares of OS worth $719.0K, dated 2025-05-27. The first filing on our record is dated 2024-07-26 and the latest 2025-12-16.
OS
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2024-07-25 | S, sale reported on Form 4 | 20,000 | $377.0K | 2024-07-26 |
| 2024-12-13 | S, sale reported on Form 4 | 6,196 | $189.1K | 2024-12-17 |
| 2024-12-13 | S, sale reported on Form 4 | 7,569 | $223.8K | 2024-12-17 |
| 2025-01-15 | S, sale reported on Form 4 | 10,000 | $265.7K | 2025-01-17 |
| 2025-02-18 | S, sale reported on Form 4 | 10,000 | $250.4K | 2025-02-20 |
| 2025-05-27 | S, sale reported on Form 4 | 25,000 | $719.0K | 2025-05-29 |
| 2025-06-11 | S, sale reported on Form 4 | 6,501 | $183.5K | 2025-06-12 |
| 2025-06-16 | S, sale reported on Form 4 | 9,354 | $261.0K | 2025-06-18 |
| 2025-06-25 | S, sale reported on Form 4 | 25,000 | $669.2K | 2025-06-27 |
| 2025-07-25 | S, sale reported on Form 4 | 25,000 | $625.0K | 2025-07-28 |
| 2025-09-15 | S, sale reported on Form 4 | 8,943 | $170.2K | 2025-09-16 |
| 2025-12-15 | S, sale reported on Form 4 | 9,571 | $169.7K | 2025-12-16 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1642337) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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