Summary
Updated Aug 31, 2026
Christopher E. Greiner is Chief Financial Officer of Zeta Global Holdings Corp. (ZETA). 5 SEC Form 4 filings on record going back to 2024, most recently on 22 May 2026. Most recent open-market trade: bought $150K of ZETA on 18 November 2024. Lifetime open-market purchases: $150K.
Recent Transactions
5Every recent SEC Form 4 transaction Christopher E. Greiner has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Christopher E. Greiner go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $150K (1 buy totaling $150K). The largest single buy on record is $150K of ZETA in 2024. 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 Christopher E. Greiner 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.
- Jeanine Silberblatt - $149K of ZETA 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 Christopher E. Greiner?
Christopher E. Greiner is a corporate insider, tracked as Chief Financial Officer of Zeta Global Holdings Corp. (ZETA). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Christopher E. Greiner last file a Form 4?
The most recent primary Form 4 on record is dated 22 May 2026, one of 5 filings going back to 2024.
Has Christopher E. Greiner been buying or selling stock?
Recorded transactions: 1 open-market purchase ($150K) and 0 open-market sales across all tracked filings.
Where can I see all of Christopher E. Greiner'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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