Updated Jul 16, 2026
Mason Heather L has filed 4 SEC Form 4 filings across 2 companies in the last 90 days — buying. Lifetime open-market purchases: $60K.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-16 | ASRT | Assertio Holdings, Inc. | J — Other acquisition / disposition | 6.7K | $0.00 | |
| 2026-06-16 | ASRT | Assertio Holdings, Inc. | J — Other acquisition / disposition | 20.9K | $0.00 | |
| 2026-05-15 | ASRT | Assertio Holdings, Inc. | G — Bona-fide gift | 6.7K | $0.00 | |
| 2026-05-15 | ASRT | Assertio Holdings, Inc. | G — Bona-fide gift | 6.7K | $0.00 | |
| 2026-05-06 | ASRT | Assertio Holdings, Inc. | A — Grant or award | 4.9K | $0.00 | |
| 2024-11-19 | ASRT | Assertio Holdings, Inc. | P — Open-market purchase | 75.0K | $0.80 | $60K |
Mason Heather L is a corporate insider — currently tracked as Director of Immatics N.V. (IMTX). InsiderAlpha tracks every SEC Form 4 filing in real time.
4 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 1 open-market purchases ($60K) and 0 open-market sales () across all tracked 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.
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