XOMA · Insider Trading

XOMA Royalty Corporation Common Stock

Every open-market purchase and sale reported by XOMA officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
14
code P
Sales
1
code S
Reporting Insiders
0
current holders
XOMA — Recent Form 4 Transactions (latest 2026-07-16)
FiledInsiderRole TypeSharesValue
2026-07-16 BVF II GP LLC 10%+ Owner U −7,593,303 —
2026-07-14 Jeffrey Trigilio Chief Financial Officer J −103,906 —
2026-07-14 Maricel Perea Montano Chief Legal Officer J −42,371 —
2026-07-14 Owen Hughes Chief Executive Officer MIXED −294,016 —
2026-07-14 Heather L Franklin Director J −6,269 —
2026-07-14 Natasha Hernday Director MIXED −13,304 —
2026-07-14 Bradley Sitko Chief Investment Officer MIXED −96,067 —
2026-07-14 Joseph M Limber Director MIXED −39,532 —
2026-07-14 Barbara Kosacz Director J −6,269 —
2026-07-14 Jack L Wyszomierski Director J −21,828 —
2026-07-14 Matthew D Perry Director J −24,138 —
2020-12-15 Matthew D Perry Director Buy +200,000 +$5.00M
2020-12-15 BVF GP HOLDINGS LLC 10%+ Owner Buy +200,000 +$5.00M
2020-11-24 Thomas M. Burns SVP, Finance & CFO MIXED — −$343.95K
2020-11-24 James R Neal CEO MIXED — −$546.18K
2020-11-06 Thomas M. Burns SVP, Finance & CFO MIXED — −$176.67K
2020-11-06 James R Neal CEO MIXED — −$205.20K
2020-09-23 BIOTECHNOLOGY VALUE FUND L P 10%+ Owner Buy +51,368 +$941.96K
2020-09-10 Biotechnology Value Trading Fund OS LP — Buy +7,737 +$145.23K
2020-09-01 BIOTECHNOLOGY VALUE FUND II LP 10%+ Owner Buy +35,621 +$666.48K
2020-08-25 BVF Partners OS Ltd. — Buy +28,175 +$546.65K
2020-08-20 BVF PARTNERS L P/IL 10%+ Owner Buy +6,163 +$120.00K
2020-08-14 BVF GP HOLDINGS LLC 10%+ Owner Buy +27,022 +$498.74K
2020-07-02 Natasha Hernday Director A +13,251 deriv. —
2020-05-27 Jack L Wyszomierski Director A +6,152 deriv. —
2020-05-27 Matthew D Perry Director A — —
2020-05-27 Barbara Kosacz Director A +6,152 deriv. —
2020-05-27 Joseph M Limber Director A +6,152 deriv. —
2020-05-27 W Denman Van Ness Director A +6,152 deriv. —
2020-04-17 Biotechnology Value Trading Fund OS LP — C +1,252,772 +$16.29M
2020-03-27 BVF II GP LLC 10%+ Owner Buy +8,264 +$142.13K
2020-03-24 James R Neal CEO Buy +1,000 +$14.50K
2020-03-23 James R Neal CEO Buy +1,000 +$16.41K
2020-03-20 BIOTECHNOLOGY VALUE FUND II LP 10%+ Owner Buy +4,439 +$64.47K
2020-03-17 BVF I GP LLC 10%+ Owner Buy +118,277 +$2.12M
2020-03-16 Thomas M. Burns SVP, Finance & CFO A +22,000 deriv. —
2020-03-16 James R Neal CEO A +66,200 deriv. —
2020-01-16 James R Neal CEO X +1,180 +$25.96K
2019-12-20 Mark N Lampert 10%+ Owner MIXED +845,463 +$18.60M
2019-11-08 James R Neal CEO MIXED — −$71.74K
2019-09-20 James R Neal Chief Executive Officer MIXED — −$242.84K
2019-09-20 Thomas M. Burns Sr. VP, Finance and CFO MIXED — −$141.15K
2019-05-20 Jack L Wyszomierski Director A +8,167 deriv. —
2019-05-20 Joseph M Limber Director A +8,167 deriv. —
2019-05-20 Barbara Kosacz Director A +8,167 deriv. —
2019-05-20 Matthew D Perry Director A — —
2019-05-20 W Denman Van Ness Director A +8,167 deriv. —
2019-05-14 W Denman Van Ness Director Sell −130 −$1.91K
2019-05-14 Biotechnology Value Trading Fund OS LP — Buy +27,913 +$408.23K
2019-02-15 Deepshikha Datta Chief Business Officer A +50,000 deriv. —
XOMA Insider Trading FAQ
Who are the insiders at XOMA?
No current Form 4 beneficial owners are on file for XOMA.
Are XOMA insiders buying or selling?
Across the 50 most recent Form 4 filings for XOMA, 14 were open-market purchases (code P) and 1 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is XOMA insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent XOMA filing is dated 2026-07-16.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the XOMA quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.