54K-share open-market buy by CEO-linked entities at Zenas BioPharma (ZBIO)
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Zenas BioPharma, Inc. chief executive officer–associated entities increased their holdings through open-market purchases of Common Stock. Entities associated with Leon O. Moulder, Jr. bought 20,000 shares on March 30 at a weighted average price of $18.23 per share and 34,000 shares on March 31 at a weighted average price of $19.31 per share, for a total of 54,000 shares. After these transactions, one indirect account held 1,726,039 shares, while another indirect trust account held 36,928 shares and a direct account held 423,155 shares. Footnotes explain that these shares are held by Tellus BioVentures LLC and a revocable trust, where Moulder may be deemed to have voting and dispositive power but disclaims beneficial ownership beyond his pecuniary interest.
Positive
- None.
Negative
- None.
Insider Trade Summary
Net Buyer: 54,000 shares ($1,021,140)
Net Buy
4 txns
Insider
MOULDER LEON O JR
Role
Chief Executive Officer
Bought
54,000 shs ($1.02M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Purchase | Common Stock | 34,000 | $19.31 | $657K |
| Purchase | Common Stock | 20,000 | $18.23 | $365K |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 1,726,039 shares (Indirect, See Footnote);
Common Stock — 423,155 shares (Direct)
Footnotes (1)
- The price reported is a weighted average price. These shares were purchased in multiple transactions ranging from $18.195 to $18.25, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. Leon O. Moulder, Jr. is the Managing Member of Tellus BioVentures LLC ("Tellus") and may be deemed to have sole voting and dispositive power over the shares held by Tellus. Mr. Moulder is the Issuer's chief executive officer and Chairman of its board of directors. Mr. Moulder disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. The price reported is a weighted average price. These shares were purchased in multiple transactions ranging from $18.84 to $19.58, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. The reporting person is a Trustee of the Leon O. Moulder, Jr. Revocable Trust U/A dtd 9/9/2008 (the "Trust") and may be deemed to have voting and dispositive power over the shares held by the Trust. The reporting person is the Issuer's chief executive officer and Chairman of its board of directors. The reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
Key Figures
Open-market shares purchased: 54,000 shares
Weighted average price 3/30: $18.23/share
Weighted average price 3/31: $19.31/share
+3 more
6 metrics
Open-market shares purchased
54,000 shares
Common Stock bought March 30–31, 2026 by associated entities
Weighted average price 3/30
$18.23/share
20,000-share open-market purchase on March 30, 2026
Weighted average price 3/31
$19.31/share
34,000-share open-market purchase on March 31, 2026
Indirect holdings after 3/31 trade
1,726,039 shares
Common Stock indirectly held in one associated account
Trust holdings
36,928 shares
Common Stock held indirectly via revocable trust
Direct holdings
423,155 shares
Common Stock held directly by reporting person
Key Terms
open-market purchase, weighted average price, indirect ownership, dispositive power, +1 more
5 terms
open-market purchase financial
"Entities associated with Leon O. Moulder, Jr. bought 20,000 shares on March 30 at a weighted average price"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
weighted average price financial
"The price reported is a weighted average price. These shares were purchased in multiple transactions"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
indirect ownership financial
"After these transactions, one indirect account held 1,726,039 shares, while another indirect trust account held 36,928 shares"
dispositive power financial
"may be deemed to have sole voting and dispositive power over the shares held by Tellus"
Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.
revocable trust financial
"Trustee of the Leon O. Moulder, Jr. Revocable Trust U/A dtd 9/9/2008"
A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.
FAQ
What insider transaction did Zenas BioPharma (ZBIO) disclose on this Form 4?
Zenas BioPharma disclosed that entities associated with CEO Leon O. Moulder, Jr. bought 54,000 shares of Common Stock in the open market. The trades occurred on March 30 and March 31, 2026, and were reported as indirect ownership positions.
What do the Form 4 footnotes say about the CEO’s beneficial ownership in Zenas BioPharma (ZBIO)?
The footnotes state that Leon O. Moulder, Jr., as managing member of Tellus BioVentures LLC and trustee of a revocable trust, may be deemed to have voting and dispositive power, but he disclaims beneficial ownership beyond his pecuniary interest in those securities.