Larry Douglas Altstiel
Chief Medical Officer · ProMIS Neurosciences Inc.
Individual
- 2024
- Sep 22, 2025
- 2
Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Larry Douglas Altstiel 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.
- ABG Management Ltd. - $8.50M in PMN purchases and sales in the last 12 months
- Eugene Williams - $141K in PMN purchases and sales in the last 12 months
- Johanne Kaplan - $55K in PMN purchases and sales in the last 12 months
- Patrick D. Kirwin - $45K in PMN purchases and sales in the last 12 months
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Frequently asked questions
Who is Larry Douglas Altstiel?
Larry Douglas Altstiel is a corporate insider, tracked as Chief Medical Officer of ProMIS Neurosciences Inc. (PMN). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Larry Douglas Altstiel last file a Form 4?
The most recent primary Form 4 on record is dated 22 September 2025, one of 2 filings going back to 2024.