Summary
Updated Aug 31, 2026
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
20Every recent SEC Form 4 transaction Celeste Beeks Mastin has reported, most recent first.
Trading Pattern
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 transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
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 of GVA open-market activity in the last 12 months
- Michael G. Tatusko - $1.06M of GVA open-market activity in the last 12 months
- Bradley Jay Williams - $949K of GVA open-market activity in the last 12 months
- Staci M. Woolsey - $752K of GVA open-market activity in the last 12 months
- Brian R. Dowd - $726K of GVA open-market activity in the last 12 months
- John Timothy Romer - $107K of GVA open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Celeste Beeks Mastin?
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.
How many SEC Form 4 filings has Celeste Beeks Mastin submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
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.
Where can I see all of Celeste Beeks Mastin's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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