Zagorski Mark, CEO of DoubleVerify Holdings (DV), has demonstrated a clear selling bias in his insider transactions, with $1.09 million in total sales compared to just $896 in purchases across 35 reported trades. His activity has been exclusively concentrated in DV stock, with no recent buying activity. The most notable dispositions occurred on March 15, 2026, when Zagorski executed multiple sales totaling $555,735.33, including a single transaction worth $342,208.57. Earlier in December 2025, he conducted another series of sales amounting to $193,164.88 across five separate filings, with the largest being $91,156.11 on December 15.
The only recorded purchase was a modest $896 acquisition on November 30, 2025, coded as a "J" transaction, typically indicating an employee stock purchase plan or other indirect acquisition. All other filings since late 2025 reflect dispositions, either through open market sales ("F" codes) or derivative transactions ("M" codes) with no reported value. The absence of recent buying activity and the sustained pattern of sales suggest a consistent reduction in Zagorski's DV holdings over time, though the reasons remain undisclosed in the filings. The transactions occurred at varying price points, with individual sales ranging from $11,353.52 to $342,208.57, indicating a methodical rather than urgent liquidation approach.
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