Karen Firestone
Director · Amylyx Pharmaceuticals, Inc.
IndividualBuying only
- 2025
- Sep 2, 2026
- 4
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Karen Firestone files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Joshua B. Cohen - $3.60M in AMLX purchases and sales in the last 12 months
- Justin B. Klee - $3.59M in AMLX purchases and sales in the last 12 months
- Gina Mazzariello - $1.05M in AMLX purchases and sales in the last 12 months
- George M. Milne Jr. - $831K in AMLX purchases and sales in the last 12 months
- James M. Frates - $554K in AMLX purchases and sales in the last 12 months
- Camille L. Bedrosian - $513K in AMLX purchases and sales in the last 12 months
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Frequently asked questions
Who is Karen Firestone?
Karen Firestone is a corporate insider, tracked as Director of Amylyx Pharmaceuticals, Inc. (AMLX). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Karen Firestone submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Karen Firestone been buying or selling stock?
Recorded transactions: 2 open-market purchases ($152K) and 0 open-market sales across all tracked filings.
