Insiders who reported open-market trades in the last 12 months at the companies Gregg R. Honigblum 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.
Gregg R. Honigblum is a corporate insider, tracked as Chief Investment Officer, Director of Sintx Technologies, Inc. (SINT). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Gregg R. Honigblum last file a Form 4?
The most recent primary Form 4 on record is dated 11 February 2026, one of 6 filings going back to 2025.
Has Gregg R. Honigblum been buying or selling stock?
Recorded transactions: 31 open-market purchases ($525K) and 0 open-market sales across all tracked filings.
Gregg R. Honigblum is Chief Investment Officer, Director of Sintx Technologies, Inc. (SINT). 6 SEC Form 4 filings on record going back to 2025, most recently on 11 February 2026. Most recent open-market trade: bought $21K of SINT on 9 December 2025. Lifetime open-market purchases: $525K.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Gregg R. Honigblum.
InsiderAlpha's records for Gregg R. Honigblum go back to 2025: 6 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $17K (31 buys totaling $525K). The largest single buy on record is $21K of SINT in 2025. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
