Leon O Moulder Jr

See Remarks · Zenas BioPharma

Leon O Moulder Jr (See Remarks) filed 5 Form 4 reports in the trailing twelve months (5 purchases, 0 sales), most often in Zenas BioPharma, Inc. (ZBIO). Across 5 priced purchase filings, the average 21-session return was +13.9% from execution and +14.7% from disclosure (delay-adjusted; derived). The largest single filing was $1.6M of ZBIO (100,000 sh across 3 lots, as filed), executed Jan 7. Data as of Nov 8 2026.

Add to watchlist

Return, ttmiAverage return per filing, trailing twelve months

+13.9%

avg across 5 priced filings

Delay-adjustediThe same average, entered at disclosure dates

+14.7%

same 5 filings, from disclosure

Filings, ttm

5 buys · 0 sells

Median delay

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$5.8M

shares × price, as filed

Last traded

May 18

Filed May 18

Impact on $10,000 · 12M

$15,154 (+51.5%)

S&P 500 $10,907 (+9.1%) · 42.5 pts ahead

Leon O Moulder Jr S&P 500

Derived: compounded across filings from disclosure dates · past 12 months

Open performance→

Volume by month

Buys $7.4M Sells $0

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Healthcare 5 filings

Sector per market data · by filing · past 12 months

Most traded names

ZBIO

Zenas BioPharma, Inc. ZBIO · 9 buys · 0 sells 9 filings

Recent filings

ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $1.0M
60,000 sh × $16.88
Exec May 18
Filed May 18 · 9:12 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $1.1M
60,000 sh across 2 lots
Exec Apr 28
Filed Apr 29 · 7:21 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $1.0M
54,000 sh across 2 lots
Exec Mar 30
Filed Mar 31 · 8:14 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $1.0M
57,000 sh × $17.96
Exec Feb 2
Filed Feb 3 · 4:30 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $1.6M
100,000 sh across 3 lots
Exec Jan 7
Filed Jan 9 · 9:42 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $770K
36,928 sh × $20.85
Exec Oct 7 2025
Filed Oct 9 2025 · 5:24 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $167K
25,000 sh × $6.67
Exec Feb 18 2025
Filed Feb 19 2025 · 5:30 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $718K
70,000 sh across 2 lots
Exec Dec 3 2024
Filed Dec 4 2024 · 5:30 PM ET More filings →