Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Harry Penner Jr. 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.
- Richard M. Wright - $1.18M in CLDX purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is Harry Penner Jr.?
Harry Penner Jr. is a corporate insider of Celldex Therapeutics, Inc. (CLDX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Harry Penner Jr. last file a Form 4?
The most recent primary Form 4 on record is dated 29 June 2026, one of 2 filings going back to 2025.