Koefoed William A
- SEC CIK
- 0001642337
In the past year, 1 open-market sale filing worth $169.7K and no purchases.
Current role at each company
- OS OneStream, Inc.Other: Former Chief Financial Officeras of Jan 5, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- $169.7K
- 1 filing
- Net
- −$169.7K
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Koefoed William A as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 16, 2025 (view filing) | Dec 15 | 1 day | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −9.57K | $17.73 | −$169.7K | −4.4%206.1K after | 10b5-1 |
| Sep 16, 2025 (view filing) | Sep 15 | 1 day | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −8.94K | $19.03 | −$170.2K | −3.9%222.0K after | 10b5-1 |
| Jul 28, 2025 (view filing) | Jul 25 | 3 days | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −25.0K | $25.00 | −$625.0K | −9.5%237.8K after | 10b5-1 |
| Jun 27, 2025 (view filing) | Jun 25 | 2 days | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −25.0K | $26.77 | −$669.3K | −9.5%237.8K after | 10b5-1 |
| Jun 18, 2025 (view filing) | Jun 16 | 2 days | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −9.35K | $27.90 | −$261.0K | −3.8%237.8K after | 10b5-1 |
| Jun 12, 2025 (view filing) | Jun 11 | 1 day | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −6.50K | $28.23 | −$183.5K | −2.6%247.2K after | |
| May 29, 2025 (view filing) | May 27 | 2 days | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −25.0K | $28.76 | −$719.0K | −9.0%253.7K after | 10b5-1 |
| Feb 20, 2025 (view filing) | Feb 18 | 2 days | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −10.0K | $25.04 | −$250.4K | −100.0%0 after | 10b5-1 |
| Jan 17, 2025 (view filing) | Jan 15 | 2 days | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −10.0K | $26.57 | −$265.7K | −100.0%0 after | 10b5-1 |
| Dec 17, 2024 (view filing) | Dec 13 | 4 days | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −13.8K | $30.00 | −$412.9K | −100.0%0 after | 2 lots10b5-1 |
| Jul 26, 2024 (view filing) | Jul 25 | 1 day | Koefoed William AChief Financial Officer | SSaleClass A Common Stock | −20.0K | $18.85 | −$377.0K | −100.0%0 after |