Janux Therapeutics, Inc. (JANX) Insider Ownership

Historic Insider Ownership Trends

Janux Therapeutics's top three insider shareholders as of April 17, 2026 are Ventures Xi, L.P. Avalon (TenPercentOwner, 7.38Mn shares), Jay Lichter (Director, 7.24Mn shares), Tighe Reardon (Acting Chief Financial Officer, 3.97Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Ventures Xi, L.P. Avalon - 2,071,799 5,305,966 18 Oct, 2024
Jay Lichter - 0 7,244,907 05 Jun, 2024
Tighe Reardon Acting Chief Financial Officer 0 3,973,691 05 Jun, 2024
Jay Lichter - 0 849,854 15 Nov, 2023
Ventures Xi, L.P. Avalon - 0 849,854 13 Nov, 2023
Tighe Reardon Acting Chief Financial Officer 0 849,854 15 Nov, 2023
David Alan Campbell President And Ceo 381,582 0 02 Jan, 2025
Peter A. Thompson - 0 231,098 30 Dec, 2021
Thomas Diraimondo Chief Scientific Officer 155,825 0 02 Jan, 2026
Sheila Gujrathi - 118,889 0 13 Jun, 2025
Charles M. Winter Chief Technical Officer 106,321 0 02 Jan, 2026
Andrew Hollman Meyer Chief Business Officer 83,095 0 02 Jan, 2026
Janeen Noel Doyle Chief Corp. Bus. Dev. Ofcr 80,000 0 02 Jan, 2026
Vickie L Capps - 74,098 0 13 Jun, 2025
Zachariah Mciver Chief Medical Officer 52,286 0 02 Jan, 2026
William Go Chief Medical Officer 44,000 0 04 Feb, 2026
Maria Dobek Vice President, Accounting 34,308 0 02 Jan, 2026
Byron Robinson Chief Strategy Officer 28,000 0 03 Jan, 2025
Eric Dobmeier - 9,981 0 13 Jun, 2025
Natasha Hernday - 8,731 0 13 Jun, 2025
Jay Lichter - 7,000 0 24 Oct, 2024
Alana B. Mcnulty - 6,250 0 13 Jun, 2025
Winston Kung - 6,250 0 13 Jun, 2025
Jake Simson - 6,250 0 13 Jun, 2025
Ronald W Barrett - 6,250 0 13 Jun, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
02 Feb, 2026 William Go Common Stock A 44,000 $0.00 44,000 D A
02 Feb, 2026 William Go Stock option (right to buy) A 154,000 $0.00 154,000 D A
02 Jan, 2026 Janeen Noel Doyle Common Stock A 36,000 $0.00 80,000 D A
02 Jan, 2026 Thomas Diraimondo Common Stock D 2,505 $13.73 124,425 D S
02 Jan, 2026 Andrew Hollman Meyer Common Stock D 1,879 $13.73 83,095 D S
02 Jan, 2026 Charles M. Winter Common Stock D 2,401 $13.73 77,721 D S
02 Jan, 2026 Zachariah Mciver Common Stock D 2,714 $13.73 23,286 D S
02 Jan, 2026 Maria Dobek Common Stock D 1,462 $13.73 15,373 D S
02 Jan, 2026 Janeen Noel Doyle Stock option (right to buy) A 126,000 $0.00 126,000 D A
02 Jan, 2026 Zachariah Mciver Common Stock A 29,000 $0.00 52,286 D A
02 Jan, 2026 Maria Dobek Common Stock A 18,935 $0.00 34,308 D A
02 Jan, 2026 Charles M. Winter Common Stock A 28,600 $0.00 106,321 D A
02 Jan, 2026 Thomas Diraimondo Common Stock A 31,400 $0.00 155,825 D A
02 Jan, 2026 Charles M. Winter Stock option (right to buy) A 100,100 $0.00 100,100 D A
02 Jan, 2026 Maria Dobek Stock option (right to buy) A 42,600 $0.00 42,600 D A
02 Jan, 2026 Zachariah Mciver Stock option (right to buy) A 101,500 $0.00 101,500 D A
02 Jan, 2026 Thomas Diraimondo Stock option (right to buy) A 109,900 $0.00 109,900 D A
01 Dec, 2025 Andrew Hollman Meyer Common Stock A 3,333 $10.59 88,307 D M
01 Dec, 2025 Andrew Hollman Meyer Common Stock D 2,700 $32.85 85,607 D S
01 Dec, 2025 Andrew Hollman Meyer Common Stock D 633 $33.52 84,974 D S