Summary
Updated Aug 31, 2026
Michael Sean Griffey is Director of TechTarget, Inc. (TTGT). 5 SEC Form 4 filings on record going back to 2024, most recently on 13 August 2026. Most recent open-market trade: bought $221 of TTGT on 26 December 2024. Lifetime open-market purchases: $3.54M. Historical track record: 1/5 stars across 20 tracked purchases.
Recent Transactions
20Every recent SEC Form 4 transaction Michael Sean Griffey has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★☆☆☆☆ (1/5) |
| Total purchases tracked | 20 |
| Purchases with forward-return data | 20 |
| 30-day win rate | 0% |
| 90-day win rate | 0% |
| Avg 5-day return | -9.16% |
| Avg 30-day return | -20.11% |
| Avg 90-day return | -39.66% |
| Best 30-day return | -8.54% |
Trading Pattern
InsiderAlpha's records for Michael Sean Griffey go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. The typical open-market purchase is $177K (20 buys totaling $3.54M). The largest single buy on record is $867K of TTGT 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 Michael Sean Griffey 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.
- Steven Niemiec - $190K of TTGT open-market activity in the last 12 months
- David J. S. Flaschen - $119K of TTGT open-market activity in the last 12 months
- Gary John Nugent - $25K of TTGT open-market activity in the last 12 months
- Daniel T. Noreck - $22K of TTGT open-market activity in the last 12 months
- Charles D. Rennick - $13K of TTGT 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 Michael Sean Griffey?
Michael Sean Griffey is a corporate insider, tracked as Director of TechTarget, Inc. (TTGT). InsiderAlpha holds 5 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 Michael Sean Griffey submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Michael Sean Griffey been buying or selling stock?
Recorded transactions: 20 open-market purchases ($3.54M) and 0 open-market sales across all tracked filings.
How accurate is Michael Sean Griffey's historical track record?
Across 20 tracked purchases, Michael Sean Griffey averaged -20.1% avg 30-day return with a 0% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
Where can I see all of Michael Sean Griffey'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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