Harold Edward Fleming
Director · Sionna Therapeutics, Inc.
Individual
- 2024
- Jun 18, 2026
- 4
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Harold Edward Fleming 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.
- Peter A. Thompson - $55.67M in SION purchases and sales in the last 12 months
- ORBIMED ADVISORS LLC - $55.67M in SION purchases and sales in the last 12 months
- RA CAPITAL MANAGEMENT, L.P. - $43.30M in SION purchases and sales in the last 12 months
- Bruce Booth - $18.23M in SION purchases and sales in the last 12 months
- Samarth Kulkarni - $10.47M in CRSP purchases and sales in the last 12 months
- TPG GP A, LLC - $10.00M in SION purchases and sales in the last 12 months
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Frequently asked questions
Who is Harold Edward Fleming?
Harold Edward Fleming is a corporate insider, tracked as Director of Sionna Therapeutics, Inc. (SION). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Harold Edward Fleming last file a Form 4?
The most recent primary Form 4 on record is dated 18 June 2026, one of 4 filings going back to 2024.
