Aaron Kantoff - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Aaron Kantoff has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Aaron Kantoff is a corporate insider at Avalo Therapeutics, Inc. (AVTX). SEC records also connect Kantoff to Tourmaline Bio, Inc. (TRML). Kantoff has reported 5 insider filings with the SEC since 2025. The most recent filing was in June 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- Avalo Therapeutics, Inc.
- Tourmaline Bio, Inc.
Trading Pattern
InsiderAlpha's records for Aaron Kantoff go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. 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 Aaron Kantoff 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.
- Insider at Avalo Therapeutics, Inc. (AVTX) - 2 filings, 2026
- Insider at Tourmaline Bio, Inc. (TRML) - 3 filings, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-31 | AVTX | Avalo Therapeutics, Inc. | M - Option exercise | 3.2K | - | |
| 2025-10-28 | TRML | Tourmaline Bio, Inc. | J - Other acquisition / disposition | 88.3K | - | |
| 2025-10-24 | TRML | Tourmaline Bio, Inc. | G - Bona-fide gift | 5.0K | $0.00 | |
| 2025-09-05 | TRML | Tourmaline Bio, Inc. | M - Option exercise | 10.0K | $9.46 | $95K |
| 2025-09-05 | TRML | Tourmaline Bio, Inc. | M - Option exercise | 37.9K | $0.13 | $5K |
Companies - Last 90 Days
- Avalo Therapeutics, Inc. (AVTX) - 1 filing, last 2026-06-04
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Aaron Kantoff has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Mittie Doyle - $2.93M of AVTX open-market activity in the last 12 months
- Christopher Ryan Sullivan - $1.89M of AVTX open-market activity in the last 12 months
- Paul Varki - $1.51M of AVTX open-market activity in the last 12 months
- Jonathan Goldman - $163K of AVTX open-market activity in the last 12 months
- Mitchell Chan - $72K of AVTX open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- ABRAMS CAPITAL MANAGEMENT, L.P.
- Abu Dhabi Investment Authority
- Abu Dhabi Pension Fund
- William A. Ackman
- AEI Capital Ltd
- Noubar Afeyan
- Behzad Aghazadeh
- Srinivas Akkaraju
Frequently Asked Questions
Who is Aaron Kantoff?
Aaron Kantoff is a corporate insider at Avalo Therapeutics, Inc. (AVTX). SEC records also connect Kantoff to Tourmaline Bio, Inc. (TRML). Kantoff has reported 5 insider filings with the SEC since 2025. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Aaron Kantoff submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Aaron Kantoff'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 Aaron Kantoff profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.