Richard Alistair Stewart
Director · ACHIEVE LIFE SCIENCES, INC.
- 2025
- Aug 21, 2026
- 5
Summary
Latest filing:
Richard Alistair Stewart is Director of ACHIEVE LIFE SCIENCES, INC. (ACHV). 5 SEC Form 4 filings on record going back to 2025, most recently on 21 August 2026. Most recent open-market trade: sold $175K of ACHV on 21 August 2026. Lifetime open-market sales: $553K.
Recent transactions
3The latest 3 SEC Form 4 transactions reported by Richard Alistair Stewart.
Trading pattern
InsiderAlpha's records for Richard Alistair Stewart go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
Other insiders active in the same stocks
Insiders who have reported open-market trades at the same companies as Richard Alistair Stewart. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Thomas Braxton King - $387K in ACHV purchases and sales on record
- Mark K. Oki - $146K in ACHV purchases and sales on record
- Cindy Jacobs - $77K in ACHV purchases and sales on record
- Jaime Xinos - $58K in ACHV purchases and sales on record
- Jerry Wan - $39K in ACHV purchases and sales on record
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Frequently asked questions
Who is Richard Alistair Stewart?
Richard Alistair Stewart is a corporate insider, tracked as Director of ACHIEVE LIFE SCIENCES, INC. (ACHV). InsiderAlpha holds 5 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 Richard Alistair Stewart submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Richard Alistair Stewart been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($553K) across all tracked filings.