Insiders who reported open-market trades in the last 12 months at the companies Celeste Beeks Mastin 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.
Kyle T. Larkin - $5.43M in GVA purchases and sales in the last 12 months
Michael G. Tatusko - $1.06M in GVA purchases and sales in the last 12 months
Nathan D. Weaver - $1.01M in FUL purchases and sales in the last 12 months
Celeste Beeks Mastin is a corporate insider, tracked as Director of GRANITE CONSTRUCTION INC (GVA). InsiderAlpha holds 12 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Celeste Beeks Mastin last file a Form 4?
The most recent primary Form 4 on record is dated 9 June 2026, one of 12 filings going back to 2024.
Has Celeste Beeks Mastin been buying or selling stock?
Recorded transactions: 2 open-market purchases ($493K) and 2 open-market sales ($1.33M) across all tracked filings.
Celeste Beeks Mastin is Director of GRANITE CONSTRUCTION INC (GVA). 12 SEC Form 4 filings on record going back to 2024, most recently on 9 June 2026. Most recent open-market trade: bought $295K of FUL on 7 April 2026. Lifetime open-market purchases: $493K. Lifetime open-market sales: $1.33M.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Celeste Beeks Mastin.
InsiderAlpha's records for Celeste Beeks Mastin go back to 2024: 12 primary Form 4 filings, an average of 4.0 per year. The typical open-market purchase is $247K (2 buys totaling $493K). The largest single buy on record is $295K of FUL in 2026. Sales side: 2 recorded sales totaling $1.33M, so the filing history runs sell-heavy by dollar value. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
