Ian Seth Jacobs - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Ian Seth Jacobs is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $10.
Profile
Ian Seth Jacobs is a corporate insider at Matternet, Inc.. SEC records also connect Jacobs to Orielle Acquisition Corp. and DEEP FISSION, INC.. Jacobs has reported 5 insider filings with the SEC since 2024. The most recent filing was in May 2026.
| Role | Insider |
|---|---|
| Notability | 40/100 |
Board memberships
- Matternet, Inc.
- Orielle Acquisition Corp.
- DEEP FISSION, INC.
- Deep Isolation Nuclear, Inc.
- Lomond Therapeutics Holdings, Inc.
Reported roles
- President, CEO, CFO, Secretary
- President, CEO, CFO, Secretary
- President, CEO, CFO, Secretary
Trading Pattern
InsiderAlpha's records for Ian Seth Jacobs go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $3 (3 buys totaling $10). No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Ian Seth Jacobs has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- President, CEO, CFO, Secretary, Director at DEEP FISSION, INC. (FISN) - 1 filing, 2025
- President, CEO, CFO, Secretary, Director at Deep Isolation Nuclear, Inc. (DBHL) - 1 filing, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-28 | - | Matternet, Inc. | J - Other acquisition / disposition | 2.17M | $0.00 | |
| 2025-08-26 | - | Orielle Acquisition Corp. | P - Open-market purchase | 50.0K | $0.00 | $5 |
| 2025-08-26 | FISN | DEEP FISSION, INC. | P - Open-market purchase | 25.0K | $0.00 | $2 |
| 2025-07-16 | DBHL | Deep Isolation Nuclear, Inc. | P - Open-market purchase | 25.0K | $0.00 | $2 |
| 2024-11-05 | - | Lomond Therapeutics Holdings, Inc. | J - Other acquisition / disposition | 75.0K | $0.00 |
Most Active Insiders Right Now
Ian Seth Jacobs has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Carl C. Icahn
- Infinite Acquisitions Partners LLC
- Ab Investor
- Irrevocable Larson Family Investment Trust
- Jared Isaacman
- Ryan Israel
- Mitchell Jacobson
- JANA Partners Management, LP
Frequently Asked Questions
Who is Ian Seth Jacobs?
Ian Seth Jacobs is a corporate insider at Matternet, Inc.. SEC records also connect Jacobs to Orielle Acquisition Corp. and DEEP FISSION, INC.. Jacobs has reported 5 insider filings with the SEC since 2024. The most recent filing was in May 2026.…
Has Ian Seth Jacobs been buying or selling stock?
Recorded transactions: 3 open-market purchases ($10) and 0 open-market sales across all tracked filings.
Where can I see all of Ian Seth Jacobs's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Ian Seth Jacobs profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.