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ZBIO
NASDAQ Life Sciences

Zenas BioPharma CEO & Chairman Discloses 5.16% Stake, Recent $2.4M Share Purchases

Arie Shkolnikov · Analysis by Wiseek AI
More coverage: Biotech Stocks · Healthcare
Sentiment info
Positive
Importance info
7
Price
$22.5
Mkt Cap
$1.211B
52W Low
$5.83
52W High
$44.6
52W Position info
286% above low
Off High info
50% below high
Rel. Volume info
1.1× avg
Market data snapshot near publication time

ZBIO has more than doubled off its 52-week low of $5.83.

Summary

Zenas BioPharma's CEO and Chairman, Leon O. Moulder, Jr., has disclosed a 5.16% beneficial ownership stake in the company, including recent purchases totaling approximately $2.4 million.


Key Events · Ownership and Investor Activity · ZBIO

  • CEO & Chairman Discloses 5.16% Stake

    Leon O. Moulder, Jr., the company's CEO and Chairman, along with affiliated entities, reported beneficial ownership of 2,806,792 shares, representing 5.16% of the outstanding common stock.

  • Recent Open-Market Purchases

    Mr. Moulder purchased 100,000 shares in open-market transactions between January 7-9, 2026, at prices ranging from $15.82 to $16.87, totaling approximately $1.64 million.

  • Private Placement Participation

    In October 2025, a trust controlled by Mr. Moulder acquired 36,928 shares at $20.85 per share in a private placement, valued at approximately $770,000.


Analysis · ZBIO · Life Sciences

This Schedule 13D filing reveals that Leon O. Moulder, Jr., the Chief Executive Officer and Chairman of Zenas BioPharma, along with entities he controls, beneficially owns 5.16% of the company's common stock. The disclosure highlights significant recent purchases, including approximately $770,000 through a trust in an October 2025 private placement at $20.85 per share, and an additional $1.64 million in open-market transactions in early January 2026 at prices ranging from $15.82 to $16.87. These substantial investments by a key executive signal strong confidence in the company's future prospects, especially given the current stock price of $22.50.

How filings like this one have moved

In the 30 days to Sep 30, 2026, 29.6% of the 1615 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.57%. These are measured outcomes after filings of this importance, not a forecast for this one.

Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset

At the time of this filing, ZBIO was trading at $22.50 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $1.2B. The 52-week trading range was $5.83 to $44.60. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.

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ZBIO - Latest Insights

ZBIO
Aug 19, 2026, 4:15 PM EDT
Filing Type: 144
Importance Score:
7
Price at Filing: $31.04
Real-time Price: $27.36 info
Change: -$3.68 (-12%) info
Market Cap: $1.785B info
ZBIO
Aug 13, 2026, 7:15 AM EDT
Filing Type: 10-Q
Importance Score:
8
Price at Filing: $31.30
Real-time Price: $27.36 info
Change: -$3.94 (-13%) info
Market Cap: $1.785B info
ZBIO
Aug 13, 2026, 7:05 AM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $31.30
Real-time Price: $27.36 info
Change: -$3.94 (-13%) info
Market Cap: $1.785B info
ZBIO
Aug 13, 2026, 7:00 AM EDT
Source: GlobeNewswire
Importance Score:
8
Price at Filing: $31.30
Real-time Price: $27.36 info
Change: -$3.94 (-13%) info
Market Cap: $1.785B info
ZBIO
Jun 02, 2026, 7:06 PM EDT
Source: Reuters
Importance Score:
9
Price at Filing: $17.38
Real-time Price: $27.36 info
Change: +$9.98 (+57%) info
Market Cap: $1.785B info