Janux Therapeutics, Inc. (JANX) Insider Ownership

Historic Insider Ownership Trends

JANX's three largest insider shareholders as of May 30, 2026 are Capital Management, L.P. Ra (Director, 8.12Mn shares), Ventures Xi, L.P. Avalon (TenPercentOwner, 7.38Mn shares), Jay Lichter (Director, 7.24Mn 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
Advisors Llc Orbimed - 0 231,098 30 Dec, 2021
Eric Dobmeier - 9,981 0 13 Jun, 2025
Vickie L Capps - 74,098 0 13 Jun, 2025
Ronald W Barrett - 6,250 0 13 Jun, 2025
Capital Management, L.P. Ra - 0 8,117,246 21 Jul, 2023
Peter A. Thompson - 0 231,098 30 Dec, 2021
Jay Lichter - 0 7,244,907 05 Jun, 2024
Sheila Gujrathi - 118,889 0 13 Jun, 2025
Alana B. Mcnulty - 6,250 0 13 Jun, 2025
Ventures Xi, L.P. Avalon - 2,071,799 5,305,966 18 Oct, 2024
Winston Kung - 6,250 0 13 Jun, 2025
Tighe Reardon Acting Chief Financial Officer 0 3,973,691 05 Jun, 2024
Natasha Hernday - 8,731 0 13 Jun, 2025
Jake Simson - 6,250 0 13 Jun, 2025
David Alan Campbell President And Ceo 381,582 0 02 Jan, 2025
Andrew Hollman Meyer Chief Business Officer 83,095 0 02 Jan, 2026
Byron Robinson Chief Strategy Officer 28,000 0 03 Jan, 2025
Charles M. Winter Chief Technical Officer 106,321 0 02 Jan, 2026
Thomas Diraimondo Chief Scientific Officer 155,825 0 02 Jan, 2026
Maria Dobek Vice President, Accounting 34,308 0 02 Jan, 2026
Zachariah Mciver Chief Medical Officer 52,286 0 02 Jan, 2026
Janeen Noel Doyle Chief Corp. Bus. Dev. Ofcr 80,000 0 02 Jan, 2026
William Go Chief Medical Officer 44,000 0 04 Feb, 2026

* 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 Andrew Hollman Meyer Common Stock D 1,879 $13.73 83,095 D S
02 Jan, 2026 Zachariah Mciver Common Stock D 2,714 $13.73 23,286 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 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 Charles M. Winter Common Stock D 2,401 $13.73 77,721 D S
02 Jan, 2026 Thomas Diraimondo Common Stock D 2,505 $13.73 124,425 D S
02 Jan, 2026 Zachariah Mciver Common Stock A 29,000 $0.00 52,286 D A
02 Jan, 2026 Thomas Diraimondo Common Stock A 31,400 $0.00 155,825 D A
02 Jan, 2026 Charles M. Winter Common Stock A 28,600 $0.00 106,321 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 Janeen Noel Doyle Stock option (right to buy) A 126,000 $0.00 126,000 D A
02 Jan, 2026 Charles M. Winter Common Stock A 28,600 $0.00 106,321 D A
02 Jan, 2026 Thomas Diraimondo Stock option (right to buy) A 109,900 $0.00 109,900 D A
02 Jan, 2026 Zachariah Mciver Stock option (right to buy) A 101,500 $0.00 101,500 D A