Zenas BioPharma, Inc. (ZBIO) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Medium Risk
Moderate dilution risk
Last updated: March 31, 2026

Risk Assessment Details

Potential Dilution: 32.3% of current shares
Recent Dilution: 9.24% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
42M
Potential Supply
14M
Additional shares possible
Splits
None
Past 2 years

Summary

ZBIO currently has 41.9M outstanding shares. with moderate dilution risk from 13.5M authorized shares representing 32.3% potential dilution. The company has minimally diluted shareholders by 9.24% over the past 2 years.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
Mar 31, 2026

8-K filing: Zenas BioPharma, Inc. completed a public offering of $200 million aggregate principal amount of 2.50% Convertible Senior Notes due 2032 and an equity offering of 5,000,000 shares of common stock at a price of $20.00 per share. ($100.0M proceeds)

42M 14M
Oct 08, 2025

8-K filing: Zenas BioPharma, Inc. issued 5,000,000 shares of common stock to InnoCare Pharma Inc. as part of a License Agreement and will issue an additional 2,000,000 shares upon achieving a milestone. Additionally, Zenas will sell 6,310,811 shares of common stock to Institutional, Director, and Officer Investors in a private placement. ($120.0M proceeds)

42M 14M
Aug 12, 2025

10-Q filing | 41.9M shares outstanding

42M 14M
May 15, 2025

10-Q filing | 41.8M shares outstanding

42M 14M
Mar 11, 2025

10-K filing | 41.8M shares outstanding

42M 14M
Nov 12, 2024

10-Q filing | 41.8M shares outstanding

42M 14M
Sep 06, 2024

S-1/A filing: This S-1/A filing registers the offering of common stock with an underwriter's over-allotment option, detailing the use of proceeds for clinical development and commercial launch preparations, while also providing information on expenses, indemnification, and financial data.

38M 14M
Aug 22, 2024

S-1 filing: This is an S-1 filing for a common stock offering, with Morgan Stanley, Jefferies, Citigroup, and Guggenheim Securities acting as underwriters.

230M 0
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