Summary
Updated Aug 31, 2026
David B. Singer is Director of Infleqtion, Inc. (INFQ). 6 SEC Form 4 filings on record, most recently on 30 May 2026. Most recent open-market trade: sold $220K of INFQ on 30 May 2026. Lifetime open-market sales: $210.53M.
Recent Transactions
20Every recent SEC Form 4 transaction David B. Singer has reported, most recent first.
Trading Pattern
InsiderAlpha's records for David B. Singer go back to 2026: 6 primary Form 4 filings, an average of 6.0 per year. 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 David B. Singer 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.
- MAVERICK CAPITAL LTD - $218.76M of INFQ open-market activity in the last 12 months
- Matthew John Kinsella - $13.12M of INFQ open-market activity in the last 12 months
- Pranav Gokhale - $2.13M of INFQ open-market activity in the last 12 months
- Paul Lipman - $1.58M of INFQ open-market activity in the last 12 months
- Kristina M. Johnson - $854K of INFQ 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 David B. Singer?
David B. Singer is a corporate insider, tracked as Director of Infleqtion, Inc. (INFQ). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did David B. Singer last file a Form 4?
The most recent primary Form 4 on record is dated 30 May 2026, one of 6 filings going back to 2026.
Has David B. Singer been buying or selling stock?
Recorded transactions: 0 open-market purchases and 18 open-market sales ($210.53M) across all tracked filings.
Where can I see all of David B. Singer'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.
Learn More
Follow David B. Singer and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial