Stocks · Health care · Pharmaceutical Preparations

Zenas BioPharma, Inc.

ZBIO Clue Score40
United States Fiscal year ends December CIK 0001953926
27.26
+3.89%
Close, 9 Oct 2026 · USD

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
27.26 on 9 Oct 2026
43 29 15 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $26.54 14 Oct 2025 $25.85 15 Oct 2025 $26.99 16 Oct 2025 $24.21 17 Oct 2025 $23.95 20 Oct 2025 $26.15 21 Oct 2025 $26.03 22 Oct 2025 $24.37 23 Oct 2025 $25.01 24 Oct 2025 $23.90 27 Oct 2025 $31.80 28 Oct 2025 $30.19 29 Oct 2025 $28.01 30 Oct 2025 $29.88 31 Oct 2025 $31.25 3 Nov 2025 $31.33 4 Nov 2025 $29.95 5 Nov 2025 $30.53 6 Nov 2025 $32.46 7 Nov 2025 $33.61 10 Nov 2025 $32.47 11 Nov 2025 $35.20 12 Nov 2025 $35.80 13 Nov 2025 $35.66 14 Nov 2025 $35.00 17 Nov 2025 $35.88 18 Nov 2025 $36.21 19 Nov 2025 $37.15 20 Nov 2025 $34.84 21 Nov 2025 $35.80 24 Nov 2025 $38.25 25 Nov 2025 $39.86 26 Nov 2025 $40.53 28 Nov 2025 $38.83 1 Dec 2025 $37.07 2 Dec 2025 $34.50 3 Dec 2025 $36.67 4 Dec 2025 $38.11 5 Dec 2025 $39.38 8 Dec 2025 $39.37 9 Dec 2025 $38.18 10 Dec 2025 $39.10 11 Dec 2025 $40.21 12 Dec 2025 $40.59 15 Dec 2025 $32.59 16 Dec 2025 $36.89 17 Dec 2025 $35.81 18 Dec 2025 $35.07 19 Dec 2025 $36.15 22 Dec 2025 $42.33 23 Dec 2025 $42.81 24 Dec 2025 $43.17 26 Dec 2025 $42.49 29 Dec 2025 $39.05 30 Dec 2025 $36.58 31 Dec 2025 $36.31 2 Jan 2026 $34.50 5 Jan 2026 $16.61 6 Jan 2026 $15.20 7 Jan 2026 $16.51 8 Jan 2026 $16.41 9 Jan 2026 $16.08 12 Jan 2026 $19.78 13 Jan 2026 $21.57 14 Jan 2026 $22.56 15 Jan 2026 $19.93 16 Jan 2026 $20.16 20 Jan 2026 $20.88 21 Jan 2026 $19.59 22 Jan 2026 $20.40 23 Jan 2026 $20.09 26 Jan 2026 $19.32 27 Jan 2026 $20.07 28 Jan 2026 $21.47 29 Jan 2026 $20.88 30 Jan 2026 $18.37 2 Feb 2026 $18.15 3 Feb 2026 $19.72 4 Feb 2026 $20.66 5 Feb 2026 $21.01 6 Feb 2026 $21.80 9 Feb 2026 $22.48 10 Feb 2026 $21.48 11 Feb 2026 $23.27 12 Feb 2026 $26.11 13 Feb 2026 $26.40 17 Feb 2026 $26.77 18 Feb 2026 $26.68 19 Feb 2026 $27.02 20 Feb 2026 $25.88 23 Feb 2026 $26.14 24 Feb 2026 $26.07 25 Feb 2026 $26.03 26 Feb 2026 $26.36 27 Feb 2026 $26.35 2 Mar 2026 $25.56 3 Mar 2026 $25.18 4 Mar 2026 $25.82 5 Mar 2026 $25.26 6 Mar 2026 $25.28 9 Mar 2026 $26.14 10 Mar 2026 $25.92 11 Mar 2026 $25.34 12 Mar 2026 $24.50 13 Mar 2026 $24.04 16 Mar 2026 $23.23 17 Mar 2026 $23.48 18 Mar 2026 $23.03 19 Mar 2026 $23.37 20 Mar 2026 $22.30 23 Mar 2026 $20.63 24 Mar 2026 $21.06 25 Mar 2026 $22.19 26 Mar 2026 $22.16 27 Mar 2026 $18.21 30 Mar 2026 $18.23 31 Mar 2026 $19.55 1 Apr 2026 $20.36 2 Apr 2026 $21.46 6 Apr 2026 $22.26 7 Apr 2026 $22.48 8 Apr 2026 $20.86 9 Apr 2026 $21.28 10 Apr 2026 $20.44 13 Apr 2026 $21.04 14 Apr 2026 $21.34 15 Apr 2026 $21.05 16 Apr 2026 $21.76 17 Apr 2026 $21.82 20 Apr 2026 $20.90 21 Apr 2026 $20.44 22 Apr 2026 $20.07 23 Apr 2026 $18.49 24 Apr 2026 $18.19 27 Apr 2026 $18.59 28 Apr 2026 $18.01 29 Apr 2026 $17.55 30 Apr 2026 $19.32 1 May 2026 $19.36 4 May 2026 $21.56 5 May 2026 $20.76 6 May 2026 $20.83 7 May 2026 $19.27 8 May 2026 $19.64 11 May 2026 $20.40 12 May 2026 $19.16 13 May 2026 $19.93 14 May 2026 $18.90 15 May 2026 $18.34 18 May 2026 $16.91 19 May 2026 $17.84 20 May 2026 $19.56 21 May 2026 $19.84 22 May 2026 $18.97 26 May 2026 $18.73 27 May 2026 $18.09 28 May 2026 $18.56 29 May 2026 $18.40 1 Jun 2026 $18.17 2 Jun 2026 $17.13 3 Jun 2026 $17.40 4 Jun 2026 $18.38 5 Jun 2026 $17.47 8 Jun 2026 $17.61 9 Jun 2026 $18.42 10 Jun 2026 $17.91 11 Jun 2026 $17.76 12 Jun 2026 $19.80 15 Jun 2026 $18.71 16 Jun 2026 $18.19 17 Jun 2026 $18.58 18 Jun 2026 $19.78 22 Jun 2026 $20.80 23 Jun 2026 $20.21 24 Jun 2026 $21.80 25 Jun 2026 $24.67 26 Jun 2026 $25.87 29 Jun 2026 $25.55 30 Jun 2026 $25.38 1 Jul 2026 $28.00 2 Jul 2026 $27.23 6 Jul 2026 $26.45 7 Jul 2026 $27.68 8 Jul 2026 $28.77 9 Jul 2026 $29.43 10 Jul 2026 $28.74 13 Jul 2026 $27.88 14 Jul 2026 $28.78 15 Jul 2026 $29.41 16 Jul 2026 $28.24 17 Jul 2026 $29.53 20 Jul 2026 $30.70 21 Jul 2026 $32.36 22 Jul 2026 $31.49 23 Jul 2026 $30.99 24 Jul 2026 $30.39 27 Jul 2026 $32.82 28 Jul 2026 $32.29 29 Jul 2026 $31.09 30 Jul 2026 $32.27 31 Jul 2026 $31.44 3 Aug 2026 $31.13 4 Aug 2026 $31.42 5 Aug 2026 $31.86 6 Aug 2026 $32.17 7 Aug 2026 $32.43 10 Aug 2026 $31.99 11 Aug 2026 $32.44 12 Aug 2026 $31.29 13 Aug 2026 $29.20 14 Aug 2026 $29.51 17 Aug 2026 $30.50 18 Aug 2026 $31.91 19 Aug 2026 $31.25 20 Aug 2026 $31.62 21 Aug 2026 $32.29 24 Aug 2026 $31.65 25 Aug 2026 $33.77 26 Aug 2026 $33.04 27 Aug 2026 $32.62 28 Aug 2026 $31.27 31 Aug 2026 $32.32 1 Sep 2026 $31.98 2 Sep 2026 $33.13 3 Sep 2026 $32.92 4 Sep 2026 $32.88 8 Sep 2026 $33.05 9 Sep 2026 $32.29 10 Sep 2026 $31.10 11 Sep 2026 $31.12 14 Sep 2026 $31.91 15 Sep 2026 $31.93 16 Sep 2026 $32.32 17 Sep 2026 $31.97 18 Sep 2026 $31.50 21 Sep 2026 $32.55 22 Sep 2026 $33.05 23 Sep 2026 $29.63 24 Sep 2026 $27.50 25 Sep 2026 $26.95 28 Sep 2026 $27.55 29 Sep 2026 $26.76 30 Sep 2026 $26.97 1 Oct 2026 $27.94 2 Oct 2026 $28.30 5 Oct 2026 $27.83 6 Oct 2026 $26.94 7 Oct 2026 $28.18 8 Oct 2026 $26.24 9 Oct 2026 $27.26 MOULDER LEON O JR Chief Executive Officer Bought $819.00K 7 Jan 2026 · at $16.38 · 18.8% of stake MOULDER LEON O JR Chief Executive Officer Bought $489.00K 8 Jan 2026 · at $16.30 · 9.5% of stake MOULDER LEON O JR Chief Executive Officer Bought $331.00K 9 Jan 2026 · at $16.55 · 5.8% of stake MOULDER LEON O JR Chief Executive Officer Bought $1.02M 2 Feb 2026 · at $17.96 · 15.6% of stake Lu Hongbo Director Bought $584.66K 11 Feb 2026 · at $22.50 · 8.1% of stake Allen Patricia L Director Bought $390.09K 12 Feb 2026 · at $24.85 Allen Patricia L Director Bought $109.66K 13 Feb 2026 · at $26.36 · 26.5% of stake MOULDER LEON O JR Chief Executive Officer Bought $364.60K 30 Mar 2026 · at $18.23 · 1.2% of stake MOULDER LEON O JR Chief Executive Officer Bought $656.54K 31 Mar 2026 · at $19.31 · 2.0% of stake Lu Hongbo Director Bought $1.57M 31 Mar 2026 · at $19.93 · 22.6% of stake Fairmount Funds Management LLC Director Bought $3.00M 31 Mar 2026 · at $20.00 · 6.8% of stake MOULDER LEON O JR Chief Executive Officer Bought $450.50K 28 Apr 2026 · at $18.02 · 1.4% of stake MOULDER LEON O JR Chief Executive Officer Bought $616.70K 29 Apr 2026 · at $17.62 · 2.0% of stake MOULDER LEON O JR Chief Executive Officer Bought $1.01M 18 May 2026 · at $16.88 · 162% of stake
14 buys0 sales at will0 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Revenue
$10.00M
Net income
$377.74M
Free cash flow
$172.35M
Operating margin
-3,830.6%
Net margin
-3,777.4%
Return on equity
-156.0%
Return on capital
-94.3%
Debt to equity
0.32
Revenue growth, 1 yr
100.0%

Revenue and net income

Fiscal years, as filed with the SEC · point at a year for the detail
50M -37M FY23 Fiscal year 2023 Revenue $50.00M Net income $37.12M Margin -74.2% 5M -157M FY24 Fiscal year 2024 Revenue $5.00M Net income $156.99M Margin -3,139.8% · growth -90.0% 10M -378M FY25 Fiscal year 2025 Revenue $10.00M Net income $377.74M Margin -3,777.4% · growth +100.0%
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
18 May 2026 MOULDER LEON O JR
Chief Executive Officer
Bought $1.01M 162%
29 Apr 2026 MOULDER LEON O JR
Chief Executive Officer
Bought $616.70K 2.0%
28 Apr 2026 MOULDER LEON O JR
Chief Executive Officer
Bought $450.50K 1.4%
31 Mar 2026 Fairmount Funds Management LLC
Director
Bought $3.00M 6.8%
31 Mar 2026 Lu Hongbo
Director
Bought $1.57M 22.6%
31 Mar 2026 MOULDER LEON O JR
Chief Executive Officer
Bought $656.54K 2.0%