Jason Raleigh Nunn bought $1.2M of ZBIO
director at Zenas BioPharma, Inc.. 63,158 shares at an average of $19.00, traded Oct 9, 2025, filed Oct 14, 2025.
Score components
- +15RoleDirector
- +25Trade size$1.2M at market
- +3Relative to holdingsHoldings up 6%
- 0Price contextMid range
- +15Cluster5 insiders buying within 14 days
- 0Repeat buyingFirst buy in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001193125-25-239158, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Oct 9, 2025 | POpen-market purchase Common Stockindirect: See Note 2 | +63,158 | $19.00 | $1.2M | 1,173,395 | Oct 14, 2025 |
Related signals
Other insiders at Zenas BioPharma, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 49Moderate | ZBIObuy Zenas BioPharma, Inc. | Patricia L Allen director | $500k 19,860 shares | - | |
| 58Moderate | Zenas BioPharma, Inc. | Patrick G Enright director | $2.3M 117,255 shares | +7% | |
| 50Moderate | Zenas BioPharma, Inc. | Sr One Capital Management, LLC owner | $2.4M 126,315 shares | +11% | |
| 62Notable | Zenas BioPharma, Inc. | Fairmount Funds Management LLC director | $6.0M 316,219 shares | +17% | |
| 58Moderate | ZBIObuy Zenas BioPharma, Inc. | Hongbo Lu director | $6.0M 321,983 shares | - | |
| 64Notable | Zenas BioPharma, Inc. | Leon O Moulder Jr See Remarks | $770k 36,928 shares | - | |
| 40Moderate | ZBIObuy Zenas BioPharma, Inc. | Ting Xiao director | $78k 10,000 shares | - | |
| 57Moderate | ZBIObuy Zenas BioPharma, Inc. | Leon O Moulder Jr Chief Executive Officer | $718k 70,000 shares | +41% | |
| 39Weak | ZBIObuy Zenas BioPharma, Inc. | Leon O Moulder Jr Chief Executive Officer | $149k 10,000 shares | +6% |
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.