MarketPeel
Insider Trading Intelligence
LM

Leon O. JR Moulder

ZBIO
CHIEF EXECUTIVE OFFICER · ZENAS BIOPHARMA, INC. · CIK 0001228865
FILING MIX · LIFETIME83%/17%
BUYS
40
SELLS
8
TOTAL VALUE
$10.43M
COMPANIES
3
ACTIVE SINCE
Jan 2021
HOLDINGS NOW
605,973
AVG SELL PX
TRADE KIND
SHOWING 48 / 48
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
18 backtested trades · 8 horizons · 37 pending
Forward-return performance of every backtestable P/S trade by Leon O. JR Moulder, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d18+61.11%+6.95%+0.73%+6.22%+10.94%
14d18+66.67%+7.08%+1.08%+6.00%+4.77%
30d18+66.67%+13.02%+1.31%+12.67%+19.33%
60d18+50.00%+10.13%+0.04%+11.44%+3.37%
90d18(2 pending)+43.75%-8.34%+2.50%-10.85%-23.97%
180d18(8 pending)+30.00%-11.30%+0.49%-11.79%-28.89%
1y18(9 pending)+77.78%+126.96%+15.26%+111.70%+127.01%
2y18(18 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
ZBIO · 500,000 shares · as of Jun 15, 2026
0446,510893,0201,339,5291,786,03920252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 40 buys / 8 sellsCOVERAGE · 22 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ZLAB
ZAI LAB LTD
PURCHASEGRANT
Stock grant
22,37194,973Jun 17, 2026Jun 22, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
500,000500,000Jun 15, 2026Jun 17, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
60,000$16.88$1.01M96,928May 18, 2026May 18, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
35,000$17.62$616.7K1,786,039Apr 29, 2026Apr 29, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
25,000$18.02$450.5K1,751,039Apr 28, 2026Apr 29, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
34,000$19.31$656.5K1,726,039Mar 31, 2026Mar 31, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
20,000$18.23$364.6K1,692,039Mar 30, 2026Mar 31, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
57,000$17.96$1.02M423,155Feb 2, 2026Feb 3, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
20,000$16.55$331.0K366,155Jan 9, 2026Jan 9, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
30,000$16.30$489.0K346,155Jan 8, 2026Jan 9, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
50,000$16.38$819.0K316,155Jan 7, 2026Jan 9, 2026View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
See Remarks
36,928$20.85$769.9K36,928Oct 7, 2025Oct 9, 2025View →
ZLAB
ZAI LAB LTD
PURCHASEGRANT
Stock grant
10,83172,602Jun 18, 2025Jun 23, 2025View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
400,000400,000Jun 10, 2025Jun 12, 2025View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
25,000$6.67$166.8K266,155Feb 18, 2025Feb 19, 2025View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
45,000$9.98$449.1K241,155Dec 4, 2024Dec 4, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
25,000$10.76$269.0K196,155Dec 3, 2024Dec 4, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
2,500$14.57$36.4K171,155Nov 19, 2024Nov 20, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
7,500$15.00$112.5K168,655Nov 18, 2024Nov 20, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
2,633$18.97$49.9K1,672,039Sep 20, 2024Sep 20, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
2,367$17.88$42.3K1,669,406Sep 20, 2024Sep 20, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
5,000$17.89$89.5K1,667,039Sep 19, 2024Sep 20, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
10,000$17.91$179.1K1,662,039Sep 18, 2024Sep 20, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
48,254161,155Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
941,0880Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
108,381112,901Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
1,428,5710Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
372,0171,652,039Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
418,9960Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
3,230,2680Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
164,5231,280,022Sep 16, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
418,9960Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
108,381108,381Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
164,523164,523Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
372,017536,540Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASE
Chief Executive Officer
48,254156,635Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
941,0880Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
3,230,2680Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
SALE
Chief Executive Officer
1,428,5710Sep 16, 2024Sep 16, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
1,486,0001,486,000Sep 12, 2024Sep 17, 2024View →
ZBIO
ZENAS BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
1,486,0001,486,000Sep 12, 2024Sep 16, 2024View →
ZLAB
ZAI LAB LTD
PURCHASEGRANT
Stock grant
21,25361,771Jun 18, 2024Jun 20, 2024View →
DNTH
DIANTHUS THERAPEUTICS, INC. /DE/
PURCHASEGRANT
Stock grant
11,00011,000May 23, 2024May 28, 2024View →
DNTH
DIANTHUS THERAPEUTICS, INC. /DE/
PURCHASEGRANT
Stock grant
166,667$12.00$2.00M1,436,745Jan 22, 2024Jan 24, 2024View →
DNTH
DIANTHUS THERAPEUTICS, INC. /DE/
PURCHASEGRANT
Stock grant
6,5006,500Sep 11, 2023Sep 13, 2023View →
ZLAB
ZAI LAB LTD
PURCHASEGRANT
Stock grant
18,903$26.45$500.0K40,518Jun 29, 2023Jun 30, 2023View →
ZLAB
ZAI LAB LTD
PURCHASEGRANT
Stock grant
7,76321,615Jan 3, 2022Jan 4, 2022View →
ZLAB
ZAI LAB LTD
PURCHASEGRANT
Stock grant
3,85213,852Jan 15, 2021Jan 20, 2021View →
Other insiders · ZBIO
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About this filer
CIK 0001228865
ROLE
Chief Executive Officer
PRIMARY
ZBIO
COMPANIES
3
ACTIVE SINCE
Jan 2021
MARKETPEEL · /INSIDER/0001228865DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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