Insiders who reported open-market trades in the last 12 months at the companies Mark Zagorski 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.
Andrew E. Grimmig - $88K in DV purchases and sales in the last 12 months
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Mark Zagorski is a corporate insider, tracked as Chief Executive Officer, Director of DoubleVerify Holdings, Inc. (DV). InsiderAlpha holds 15 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 Mark Zagorski submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Mark Zagorski been buying or selling stock?
Recorded transactions: 1 open-market purchase ($11K) and 0 open-market sales across all tracked filings.
Mark Zagorski is Chief Executive Officer, Director of DoubleVerify Holdings, Inc. (DV). 15 SEC Form 4 filings on record going back to 2024, most recently on 2 October 2026. Lifetime open-market purchases: $11K.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Mark Zagorski.
InsiderAlpha's records for Mark Zagorski go back to 2024: 15 primary Form 4 filings, an average of 5.0 per year. The typical open-market purchase is $11K (1 buy totaling $11K). The largest single buy on record is $11K of DV in 2024. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
