Sullivan Mark
- SEC CIK
- 0001331843
In the past year, 3 open-market sale filings worth $931.7K and no purchases.
Current role at each company
- DFTX Definium Therapeutics, Inc.Chief Legal Officeras of Sep 14, 2026
- CARM Carisma Therapeutics Inc.General Counsel & Secretaryas of Mar 6, 2023
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
- $931.7K
- 3 filings
- Net
- −$931.7K
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Sullivan Mark 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.
DFTX Definium Therapeutics, Inc.
Chief Legal Officer9 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 26, 2026 (view filing) | Jun 25 | 1 day | Sullivan MarkChief Legal Officer | SSale | −13.0K | $45.03 | −$585.8K | −3.9%320.6K after | 10b5-1 |
| Mar 26, 2026 (view filing) | Mar 25 | 1 day | Sullivan MarkChief Legal Officer | SSale | −10.7K | $18.47 | −$197.7K | −3.8%271.1K after | 10b5-1 |
| Dec 29, 2025 (view filing) | Dec 26 | 3 days | Sullivan MarkChief Legal Officer | SSale | −11.3K | $13.15 | −$148.3K | −3.8%282.6K after | 10b5-1 |
| Sep 26, 2025 (view filing) | Sep 25 | 1 day | Sullivan MarkChief Legal Officer | SSale | −11.3K | $9.77 | −$110.2K | −3.7%293.9K after | 10b5-1 |
| Jun 26, 2025 (view filing) | Jun 25 | 1 day | Sullivan MarkChief Legal Officer | SSale | −11.5K | $6.80 | −$78.1K | −3.6%305.1K after | 10b5-1 |
| Mar 26, 2025 (view filing) | Mar 25 | 1 day | Sullivan MarkChief Legal Officer | SSale | −6.58K | $6.74 | −$44.3K | −2.0%316.6K after | 10b5-1 |
| Dec 27, 2024 (view filing) | Dec 26 | 1 day | Sullivan MarkChief Legal Officer | SSale | −4.52K | $7.43 | −$33.6K | −2.5%173.2K after | 10b5-1 |
| Sep 25, 2024 (view filing) | Sep 25 | Same day | Sullivan MarkChief Legal Officer | SSale | −4.43K | $5.98 | −$26.5K | −2.4%177.7K after | 10b5-1 |
| Jun 25, 2024 (view filing) | Jun 25 | Same day | Sullivan MarkChief Legal Officer | SSale | −17.9K | $7.22 | −$128.9K | −8.9%182.1K after | 10b5-1 |
CARM Carisma Therapeutics Inc.
General Counsel & Secretary2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 6, 2023 (view filing) | Mar 2 | 4 days | Sullivan MarkGeneral Counsel & Secretary | SSale | −219.2K | $0.59 | −$129.3K | −36.7%378.7K after | 3 lots |
| Feb 23, 2023 (view filing) | Feb 21 | 2 days | Sullivan MarkGeneral Counsel & Secretary | SSale | −39.8K | $0.59 | −$23.5K | −11.7%299.7K after |