Summary
Latest filing:
Qing Bill Sun is Chief Executive Officer, Director, 10% Owner of AA Mission Acquisition Corp. II (YCY). 2 SEC Form 4 filings on record, most recently on 14 October 2025. Most recent open-market trade: bought $262K of YCY on 14 October 2025. Lifetime open-market purchases: $5.40M.
Recent Transactions
2Every recent SEC Form 4 transaction Qing Bill Sun has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Qing Bill Sun 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.
- Mission Sponsor Aa II - $5.40M of YCY 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 Qing Bill Sun?
Qing Bill Sun is a corporate insider, tracked as Chief Executive Officer, Director, 10% Owner of AA Mission Acquisition Corp. II (YCY). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Qing Bill Sun last file a Form 4?
The most recent primary Form 4 on record is dated 14 October 2025, one of 2 filings going back to 2025.
Has Qing Bill Sun been buying or selling stock?
Recorded transactions: 4 open-market purchases ($5.40M) and 0 open-market sales across all tracked filings.
How accurate is Qing Bill Sun's historical track record?
Across 4 tracked purchases, Qing Bill Sun averaged no 30-day data yet with a win rate pending.
Where can I see all of Qing Bill Sun'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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