Tompkins Mark N.
- SEC CIK
- 0001455971
In the past year, 13 open-market sale filings worth $19.3M and no purchases.
Current role at each company
- MTTN Matternet, Inc.Other: See Remarksas of May 27, 2026
- ALMU Aeluma, Inc.Other: Former 10% Owneras of Feb 5, 2026
- FISN Deep Fission, Inc.Other: See Remarksas of Sep 8, 2025
- Orielle Acquisition Corp.Director, 10% Owneras of Aug 28, 2025
- DBHL Deep Isolation Nuclear, Inc.Other: See Remarksas of Jul 25, 2025
Show 3 more companies
- Lomond Therapeutics Holdings, Inc.Other: Former Directoras of Nov 5, 2024
- SERV Serve Robotics Inc.Other: Former Directoras of Aug 2, 2023
- GUER Guerrilla RF, Inc.Other: Former Directoras of Nov 16, 2021
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
- $19.3M
- 13 filings
- Net
- −$19.3M
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Tompkins Mark N. 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.
ALMU Aeluma, Inc.
Other: Former 10% Owner15 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 13, 2023 (view filing) | Dec 22, 2022 | 22 daysLate | Tompkins Mark N.10% Owner | PPurchaseCommon stock, par value $0.0001 per share | +83.3K | $3.00 | +$250.0K | +3.2%2.72M after | |
| Oct 2, 2025 (view filing) | Sep 29-Oct 1 | 3 days | Tompkins Mark N.10% Owner | SSale | −75.7K | $17.10 | −$1.29M | −2.6%2.81M after | From original5 lots |
| Oct 6, 2025 (view filing) | Sep 30 | 6 days | Tompkins Mark N.10% Owner | SSale | −33.8K | $16.18 | −$546.9K | −1.2%2.86M after | Amended |
| Oct 6, 2025 (view filing) | Oct 2-6 | 4 days | Tompkins Mark N.10% Owner | SSale | −129.8K | $18.00 | −$2.34M | −4.6%2.68M after | 5 lots |
| Oct 9, 2025 (view filing) | Oct 7-9 | 2 days | Tompkins Mark N.10% Owner | SSale | −106.9K | $17.25 | −$1.84M | −4.0%2.57M after | 7 lots |
| Oct 14, 2025 (view filing) | Oct 10-14 | 4 days | Tompkins Mark N.10% Owner | SSale | −107.2K | $17.87 | −$1.92M | −4.2%2.46M after | 5 lots |
| Oct 17, 2025 (view filing) | Oct 15-16 | 2 days | Tompkins Mark N.10% Owner | SSale | −65.0K | $20.09 | −$1.31M | −2.6%2.40M after | 5 lots |
| Oct 21, 2025 (view filing) | Oct 17-20 | 4 days | Tompkins Mark N.10% Owner | SSale | −77.5K | $16.67 | −$1.29M | −3.2%2.32M after | 4 lots |
| Dec 9, 2025 (view filing) | Dec 4-8 | 5 daysLate | Tompkins Mark N.10% Owner | SSale | −100.0K | $16.08 | −$1.61M | −4.3%2.22M after | 6 lots |
| Dec 11, 2025 (view filing) | Dec 9-10 | 2 days | Tompkins Mark N.10% Owner | SSale | −50.0K | $17.09 | −$854.3K | −2.3%2.17M after | 3 lots |
FISN Deep Fission, Inc.
Other: See Remarks1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 28, 2025 (view filing) | Aug 26 | 2 days | Tompkins Mark N.Director, 10% Owner | SSale | −25.0K | $0.00 | $0 | −0.5%4.72M after |
Orielle Acquisition Corp.
Director, 10% Owner1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 28, 2025 (view filing) | Aug 26 | 2 days | Tompkins Mark N.Director, 10% Owner | SSale | −50.0K | $0.00 | $0 | −1.1%4.70M after |
DBHL Deep Isolation Nuclear, Inc.
Other: See Remarks1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jul 18, 2025 (view filing) | Jul 16 | 2 days | Tompkins Mark N.Director, 10% Owner | SSale | −25.0K | $0.00 | $0 | −0.5%4.72M after |
GUER Guerrilla RF, Inc.
Other: Former Director1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 16, 2021 (view filing) | Nov 12 | 4 days | Tompkins Mark N.Other: Former Director | PPurchaseCommon stock, par value $0.0001 per share | −250.0K | $2.00 | −$500.0K | −8.5%2.70M after |