MarketPeel
Insider Trading Intelligence
Pricing
…
JW

Jack L. Wyszomierski

XOMA
DIRECTOR · XOMA ROYALTY CORP · CIK 0001023225
FILING MIX · LIFETIME61%/39%
BUYS
33
SELLS
21
TOTAL VALUE
$9.23M
COMPANIES
3
ACTIVE SINCE
Apr 2020
HOLDINGS NOW
328,620
AVG SELL PX
$33.16
TRADE KIND
SHOWING 54 / 54
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
10 backtested trades · 8 horizons · 5 pending
Forward-return performance of every backtestable P/S trade by Jack L. Wyszomierski, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d10+50.00%+0.84%+1.68%-0.84%-0.33%—
14d10+70.00%-0.16%+2.12%-2.28%-1.65%—
30d10+40.00%+7.86%+2.62%+5.24%+2.12%—
60d10+40.00%+5.55%+4.53%+1.02%-1.60%—
90d10+30.00%+9.98%+6.36%+3.62%+6.85%—
180d10(1 pending)+33.33%+21.56%+13.01%+8.56%-1.42%—
1y10(1 pending)+33.33%+26.56%+23.08%+5.08%-4.24%—
2y10(3 pending)+28.57%+57.09%+36.62%+9.44%-16.30%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
XOMA · 25,116 shares · as of May 21, 2026
06,27912,55818,83725,116202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 33 buys / 21 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
EXEL
EXELIXIS, INC.
SALE10b5-1
10b5-1 plan
3,925$50.55$198.4K284,384Jun 1, 2026Jun 3, 2026 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
8,367——288,309May 27, 2026May 29, 2026 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASEGRANT
Stock grant
3,586——25,116May 21, 2026May 26, 2026 ↗View →
SITE
SITEONE LANDSCAPE SUPPLY, INC.
PURCHASEGRANT
Stock grant
1,186——19,120May 13, 2026May 14, 2026 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASE
3,026$11.20$33.9K21,530Mar 24, 2026Mar 26, 2026 ↗View →
XOMA
XOMA ROYALTY CORP
SALE
3,026——0Mar 24, 2026Mar 26, 2026 ↗View →
EXEL
EXELIXIS, INC.
SALE
20,634——0Feb 18, 2026Feb 20, 2026 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
20,634$19.77$407.9K379,516Feb 18, 2026Feb 20, 2026 ↗View →
EXEL
EXELIXIS, INC.
SALE10b5-1
10b5-1 plan
99,574$44.01$4.38M279,942Feb 18, 2026Feb 20, 2026 ↗View →
EXEL
EXELIXIS, INC.
SALE10b5-1
10b5-1 plan
7,535$43.09$324.7K358,882Jun 3, 2025Jun 4, 2025 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
9,812——366,417May 29, 2025May 30, 2025 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASEGRANT
Stock grant
5,971——18,504May 21, 2025May 23, 2025 ↗View →
SITE
SITEONE LANDSCAPE SUPPLY, INC.
PURCHASEGRANT
Stock grant
1,125——17,934May 14, 2025May 16, 2025 ↗View →
EXEL
EXELIXIS, INC.
SALE
15,874——0Feb 28, 2025Feb 28, 2025 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
15,874$20.50$325.4K365,373Feb 28, 2025Feb 28, 2025 ↗View →
EXEL
EXELIXIS, INC.
SALE10b5-1
10b5-1 plan
8,768$37.80$331.4K356,605Feb 28, 2025Feb 28, 2025 ↗View →
EXEL
EXELIXIS, INC.
SALE10b5-1
10b5-1 plan
8,287$22.00$182.3K349,499Jun 4, 2024Jun 6, 2024 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
18,838——357,786May 31, 2024Jun 4, 2024 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASEGRANT
Stock grant
6,070——12,533May 15, 2024May 17, 2024 ↗View →
EXEL
EXELIXIS, INC.
SALE10b5-1
10b5-1 plan
10,923$21.37$233.4K338,948May 13, 2024May 15, 2024 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
11,686$19.57$228.7K349,871May 13, 2024May 15, 2024 ↗View →
EXEL
EXELIXIS, INC.
SALE
11,686——0May 13, 2024May 15, 2024 ↗View →
SITE
SITEONE LANDSCAPE SUPPLY, INC.
PURCHASEGRANT
Stock grant
865——16,809May 7, 2024May 9, 2024 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
20,718——338,185Jun 1, 2023Jun 2, 2023 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASEGRANT
Stock grant
10,967——10,967May 17, 2023May 19, 2023 ↗View →
SITE
SITEONE LANDSCAPE SUPPLY, INC.
PURCHASEGRANT
Stock grant
878——15,944May 11, 2023May 15, 2023 ↗View →
EXEL
EXELIXIS, INC.
SALE
40,000——0Mar 10, 2023Mar 14, 2023 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
40,000$6.30$252.0K332,767Mar 10, 2023Mar 14, 2023 ↗View →
EXEL
EXELIXIS, INC.
SALE
15,300$16.61$254.1K317,467Mar 10, 2023Mar 14, 2023 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
19,575——292,767May 26, 2022May 27, 2022 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASEGRANT
Stock grant
8,996——8,996May 18, 2022May 20, 2022 ↗View →
SITE
SITEONE LANDSCAPE SUPPLY, INC.
PURCHASEGRANT
Stock grant
960——15,066May 11, 2022May 13, 2022 ↗View →
EXEL
EXELIXIS, INC.
SALE
40,000——0Apr 4, 2022Apr 6, 2022 ↗View →
EXEL
EXELIXIS, INC.
SALE
6,696$23.00$154.0K273,192Apr 4, 2022Apr 6, 2022 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
40,000$3.13$125.2K279,888Apr 4, 2022Apr 6, 2022 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
8,299——239,888May 27, 2021May 28, 2021 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
16,598——16,598May 27, 2021May 28, 2021 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASEGRANT
Stock grant
5,101——5,101May 19, 2021May 21, 2021 ↗View →
SITE
SITEONE LANDSCAPE SUPPLY, INC.
PURCHASEGRANT
Stock grant
668——14,106May 12, 2021May 14, 2021 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
40,000$3.38$135.2K237,809Mar 29, 2021Mar 31, 2021 ↗View →
EXEL
EXELIXIS, INC.
SALE
40,000——0Mar 29, 2021Mar 31, 2021 ↗View →
EXEL
EXELIXIS, INC.
SALE
6,220$22.64$140.8K231,589Mar 29, 2021Mar 31, 2021 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
62,403$5.82$363.2K231,809Nov 10, 2020Nov 13, 2020 ↗View →
EXEL
EXELIXIS, INC.
SALE
34,000$20.61$700.7K197,809Nov 10, 2020Nov 13, 2020 ↗View →
EXEL
EXELIXIS, INC.
SALE
62,403——0Nov 10, 2020Nov 13, 2020 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
15,456——15,456May 21, 2020May 22, 2020 ↗View →
EXEL
EXELIXIS, INC.
PURCHASEGRANT
Stock grant
7,728——169,406May 21, 2020May 22, 2020 ↗View →
XOMA
XOMA ROYALTY CORP
PURCHASEGRANT
Stock grant
6,152——6,152May 20, 2020May 27, 2020 ↗View →
SITE
SITEONE LANDSCAPE SUPPLY, INC.
PURCHASEGRANT
Stock grant
1,228——13,438May 13, 2020May 15, 2020 ↗View →
EXEL
EXELIXIS, INC.
SALE
13,848$16.57$229.5K161,678Apr 3, 2020Apr 3, 2020 ↗View →
EXEL
EXELIXIS, INC.
SALE
30,000——0Apr 3, 2020Apr 3, 2020 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
30,000$4.58$137.4K175,526Apr 3, 2020Apr 3, 2020 ↗View →
EXEL
EXELIXIS, INC.
SALE
15,000——0Apr 3, 2020Apr 3, 2020 ↗View →
EXEL
EXELIXIS, INC.
PURCHASE
15,000$5.92$88.8K145,526Apr 3, 2020Apr 3, 2020 ↗View →
Other insiders · XOMA
Loading peer insiders…
About this filer
CIK 0001023225
ROLE
Director
PRIMARY
XOMA
COMPANIES
3
ACTIVE SINCE
Apr 2020
MARKETPEEL · /INSIDER/0001023225DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback