Summary
Updated Aug 30, 2026
Ab Investor files SEC Form 4 reports at NASDAQ, INC. (NDAQ). 2 SEC Form 4 filings on record, most recently on 15 June 2026. Most recent open-market trade: bought $4.88M of NDAQ on 15 June 2026. Lifetime open-market purchases: $20.72M.
Recent Transactions
2Every recent SEC Form 4 transaction Ab Investor has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Ab Investor go back to 2026: 2 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $10.36M (2 buys totaling $20.72M). The largest single buy on record is $15.84M of NDAQ in 2026. 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 Ab Investor 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.
- Adena T. Friedman - $76.06M of NDAQ open-market activity in the last 12 months
- Pc Nelson Griggs - $3.50M of NDAQ open-market activity in the last 12 months
- Bradley J. Peterson - $1.78M of NDAQ open-market activity in the last 12 months
- Bryan Everard Smith - $1.59M of NDAQ open-market activity in the last 12 months
- Cohen Tal - $1.41M of NDAQ open-market activity in the last 12 months
- Jeremy Skule - $966K of NDAQ 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 Ab Investor?
Ab Investor is a corporate insider of NASDAQ, INC. (NDAQ). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Ab Investor submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Ab Investor been buying or selling stock?
Recorded transactions: 2 open-market purchases ($20.72M) and 0 open-market sales across all tracked filings.
Where can I see all of Ab Investor'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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