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Bassil I. Dahiyat

XNCR
PRESIDENT & CEO · XENCOR INC · CIK 0001591312
FILING MIX · LIFETIME55%/45%
BUYS
30
SELLS
25
TOTAL VALUE
$10.25M
COMPANIES
2
ACTIVE SINCE
Mar 2020
HOLDINGS NOW
564,047
AVG SELL PX
$19.70
TRADE KIND
SHOWING 55 / 55
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
17 backtested trades · 8 horizons · 14 pending
Forward-return performance of every backtestable P/S trade by Bassil I. Dahiyat, 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
7d17+70.59%-2.20%-0.41%-1.79%-2.73%—
14d17+70.59%-1.76%+0.50%-2.26%-4.67%—
30d17+70.59%-5.00%+1.41%-6.42%-7.99%—
60d17+70.59%-6.45%+2.35%-8.80%-11.87%—
90d17+76.47%-13.77%+3.85%-20.60%-20.97%—
180d17(3 pending)+100.00%-28.86%+7.98%-36.85%-38.96%—
1y17(4 pending)+76.92%-21.12%+16.81%-37.93%-50.39%—
2y17(7 pending)+100.00%-42.40%+35.98%-78.38%-84.98%—
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
XNCR · 546,316 shares · as of Mar 6, 2026
0145,937291,874437,811583,748202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
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 · 30 buys / 25 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
17,731——17,731Jun 30, 2026Jul 2, 2026 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
6,606$11.02$72.8K546,316Mar 6, 2026Mar 9, 2026 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
14,870$11.25$167.2K552,922Mar 5, 2026Mar 9, 2026 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
6,758$11.90$80.4K567,792Mar 3, 2026Mar 4, 2026 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
97,291——574,550Mar 2, 2026Mar 4, 2026 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
583,748——583,748Mar 2, 2026Mar 4, 2026 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
10,624$12.51$132.9K477,259Dec 22, 2025Dec 23, 2025 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
10,624——0Dec 22, 2025Dec 23, 2025 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
114,377——10,624Dec 19, 2025Dec 23, 2025 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
114,377$12.51$1.43M581,012Dec 19, 2025Dec 23, 2025 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
114,377$15.71$1.80M466,635Dec 19, 2025Dec 23, 2025 ↗View →
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
40,000——40,000Jun 30, 2025Jul 2, 2025 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
19,716$13.60$268.1K465,419Mar 10, 2025Mar 11, 2025 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
329,236——329,236Mar 4, 2025Mar 5, 2025 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
109,745——485,135Mar 4, 2025Mar 5, 2025 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
8,808$15.69$138.2K375,390Feb 3, 2025Feb 3, 2025 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
8,808——0Feb 3, 2025Feb 3, 2025 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
13,548$15.69$212.6K366,163Nov 22, 2024Nov 25, 2024 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
13,548——8,808Nov 22, 2024Nov 25, 2024 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
49,278$15.69$773.2K401,893Nov 21, 2024Nov 25, 2024 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
49,278——22,356Nov 21, 2024Nov 25, 2024 ↗View →
XNCR
XENCOR INC
SALE10b5-1
10b5-1 plan
49,278$24.07$1.19M352,615Nov 21, 2024Nov 25, 2024 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
3,366——71,634Nov 13, 2024Nov 14, 2024 ↗View →
XNCR
XENCOR INC
SALE10b5-1
10b5-1 plan
3,366$24.02$80.8K352,615Nov 13, 2024Nov 14, 2024 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
3,366$15.69$52.8K355,981Nov 13, 2024Nov 14, 2024 ↗View →
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
40,000——40,000Jun 28, 2024Jul 1, 2024 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
2,741$23.50$64.4K351,894Mar 11, 2024Mar 12, 2024 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
327,225——327,225Mar 5, 2024Mar 6, 2024 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
12,528$23.43$293.5K300,097Mar 5, 2024Mar 6, 2024 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
54,538——354,635Mar 5, 2024Mar 6, 2024 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
65,001——0Dec 29, 2023Dec 29, 2023 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
65,001$11.05$718.3K357,929Dec 29, 2023Dec 29, 2023 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
45,000$20.93$941.7K312,929Dec 29, 2023Dec 29, 2023 ↗View →
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
40,000——40,000Jun 30, 2023Jul 3, 2023 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
33,497$26.19$877.3K292,216Jun 21, 2023Jun 21, 2023 ↗View →
XNCR
XENCOR INC
PURCHASE
PRESIDENT & CEO
76,012$4.25$323.1K325,713Jun 21, 2023Jun 21, 2023 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
76,012——0Jun 21, 2023Jun 21, 2023 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
2,602$29.88$77.7K249,701Mar 9, 2023Mar 13, 2023 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
5,831$31.42$183.2K252,303Mar 6, 2023Mar 8, 2023 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
2,851$31.54$89.9K258,134Mar 3, 2023Mar 6, 2023 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
52,521——260,985Mar 2, 2023Mar 6, 2023 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
315,126——315,126Mar 2, 2023Mar 6, 2023 ↗View →
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
25,000——25,000Jun 30, 2022Jul 5, 2022 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
2,494$29.00$72.3K207,815Mar 9, 2022Mar 10, 2022 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
298,567——298,567Mar 3, 2022Mar 7, 2022 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
49,761——210,309Mar 3, 2022Mar 7, 2022 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
2,929$29.90$87.6K160,548Mar 3, 2022Mar 7, 2022 ↗View →
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
7,368——7,368Jun 30, 2021Jul 2, 2021 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
21,999——163,063Mar 8, 2021Mar 10, 2021 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
131,993——131,993Mar 8, 2021Mar 10, 2021 ↗View →
XNCR
XENCOR INC
SALE
PRESIDENT & CEO
2,850$44.88$127.9K141,064Mar 3, 2021Mar 3, 2021 ↗View →
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
7,106——7,106Jun 30, 2020Jul 2, 2020 ↗View →
KOD
KODIAK SCIENCES INC.
PURCHASEGRANT
Stock grant
4,135——4,135Jun 8, 2020Jun 10, 2020 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
141,628——141,628Mar 2, 2020Mar 3, 2020 ↗View →
XNCR
XENCOR INC
PURCHASEGRANT
Stock grant
23,605——143,504Mar 2, 2020Mar 3, 2020 ↗View →
Other insiders · XNCR
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About this filer
CIK 0001591312
ROLE
PRESIDENT & CEO
PRIMARY
XNCR
COMPANIES
2
ACTIVE SINCE
Mar 2020
MARKETPEEL · /INSIDER/0001591312DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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