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YCY AA Mission Acquisition Corp. II Insider Trading

4 filings analyzed · Latest 2025-10-14
Insider buys
4
Insider sells
0
Unique insiders
2
Direction
Net buying

Historically, medium-priority insider buys have outperformed the S&P 500 by a median ~1% over the 30 days after filing — the edge is concentrated in that first month (n ≈ 7,520, 2022-2026). Past results don't predict the future. How we measure this ↗

October 2025
2025-10-14
medium
Chief Executive Officer
26,250 shares
$262,500
@ $10.00
Significance 5/10

CEO Sun Qing Bill buys 26,250 shares of YCY at $10.00 for $262,500 on 2025-10-09, holdings rise to 3.24M shares

Sun Qing Bill, Chief Executive Officer of AA Mission Acquisition Corp. II, purchased 26,250 shares at $10.00 on 2025-10-09, increasing his total holdings from 3.21M to 3.24M shares. This represents the second open-market purchase at YCY within one week, following a prior buy on 2025-10-02; outcomes from that earlier purchase are not yet measurable. Across his broader trading history (3 prior buys at other tickers), the insider's average 90-day return has been +0.5% with a 100% win rate, though this cross-ticker track record does not necessarily predict outcomes at YCY. The pattern of repeat buying at the same ticker in consecutive weeks, combined with a modest increase in aggregate holdings (+0.8%), warrants attention to whether these purchases reflect an operational trigger or market opportunity assessment.

2025-10-14
low
26,250 shares
$262,500
@ $10.00
Significance 4/10

AA Mission Sponsor II (10% owner) buys 26,250 shares of YCY at $10.00 for $262,500, adding to 3.24M shares post-transaction

A 10% owner acquired 26,250 shares at $10.00 on 2025-10-09, bringing post-transaction holdings to 3,235,250 shares, a net increase of 26,250 shares (+0.8% vs pre-transaction holdings). This represents the insider's second open-market purchase at YCY within one week (prior buy on 2025-10-02), and one of only two buys across the insider's entire open-market history. However, the timing metric is not yet measurable for either transaction at YCY since the 90-day outcome window has not closed. The pattern of consecutive purchases at the fixed $10.00 price suggests scheduled accumulation rather than discretionary conviction-driven buying.

2025-10-06
high
Chief Executive Officer
334,000 shares
$3,340,000
@ $10.00
Significance 6/10

CEO Sun Qing Bill purchases 334,000 shares of YCY at $10.00 for $3,340,000; holdings increase to 3.21M shares (+11.6%)

CEO Sun Qing Bill acquired 334,000 shares at $10.00 on 2025-10-02, deploying $3,340,000 in capital and expanding his stake from 2.88M shares to 3.21M shares (+11.6% increase). This represents a material personal investment by the chief executive officer in YCY at the at-the-money acquisition price ($10.00). Historically, across all tickers, this insider's 2 prior buys generated a +0.5% average 90-day return with a 100% win rate, though this cross-ticker track record may not reflect performance specific to YCY. The magnitude of the purchase—over $3.3 million in a single transaction at a round-number price—warrants scrutiny into the company's current position and the timing of the CEO's decision to increase his personal exposure at this valuation.

2025-10-06
high
334,000 shares
$3,340,000
@ $10.00
Significance 6/10

AA Mission Sponsor II (10% Owner) purchased 334,000 shares of YCY at $10.00 for $3,340,000 on 2025-10-02

AA Mission Sponsor II, a 10% owner of AA Mission Acquisition Corp. II, purchased 334,000 shares at $10.00 per share, increasing holdings from 2,875,000 to 3,209,000 shares (+11.6% net change). This is a material insider buy—the 334,000 shares represent a meaningful incremental investment of $3,340,000. As a significant existing shareholder, the sponsor's decision to increase exposure at this price point adds to the owner base. The magnitude of the purchase relative to prior holdings and the dollar commitment warrant investor attention, though the absence of broader insider activity or recent fundamentals context limits the ability to infer broader sentiment.

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