Insider · CIK 0001995088
Diyong Xu
Files at QTTB (Q32 Bio Inc.). First filing Jun 1, 2026, latest Jun 1, 2026.
Diyong Xu files SEC Form 4 as director and 10% owner at QTTB (Q32 Bio Inc.). Since Jun 1, 2026, Diyong Xu has reported 1 open-market buy worth $15M and 0 open-market sells worth $0, the latest filed on Jun 1, 2026.
A track record needs three past buys with six months of prices behind them; Diyong Xu has 0, so none is measured yet.
The newest scored trade: bought $15M of QTTB on May 28, 2026, filed Jun 1, 2026, scored 62 (notable). In the last 12 months: 1 buy worth $15M and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
QTTB: Q32 Bio Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 62Notable | Q32 Bio Inc. | $15M 1,875,000 shares | +83% | +658% from low-20% from high |
Transactions
Every row this insider has filed, 5 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | QTTB Q32 Bio Inc. | AGrant or award Stock Option (Right to Buy)derivative | +10,826 | $0.00 | $0 | 10,826 | Jul 21, 2026 |
| Jun 12, 2026 | QTTB Q32 Bio Inc. | AGrant or award Stock Option (Right to Buy)derivative | +9,810 | $0.00 | $0 | 9,810 | Jun 16, 2026 |
| May 28, 2026 | QTTB Q32 Bio Inc. | POpen-market purchase Common Stockindirect: See footnotes | +1,250,000 | $8.00 | $10M | 3,502,987 | Jun 1, 2026 |
| May 28, 2026 | QTTB Q32 Bio Inc. | POpen-market purchase Common Stockindirect: See footnotes | +625,000 | $8.00 | $5.0M | 625,000 | Jun 1, 2026 |
| Oct 23, 2025 | QTTB Q32 Bio Inc. | AGrant or award Stock Option (Right to Buy)derivative | +53,521 | $0.00 | $0 | 53,521 | Oct 27, 2025 |
Questions about Diyong Xu
Answered from the filings on this page, as of the latest one.
Is Diyong Xu buying or selling?
In the last 12 months Diyong Xu reported 1 open-market buy worth $15M and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $15M of QTTB on May 28, 2026. Grants, option exercises and tax withholding are not counted.
How did Diyong Xu's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Diyong Xu has 0.
Where does Diyong Xu file Form 4?
Diyong Xu has filed Form 4 at QTTB (Q32 Bio Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.