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Insider Trading Intelligence
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AR

Arnon Rosenthal

ALEC
CHIEF EXECUTIVE OFFICER · ALECTOR, INC. · CIK 0001757770
FILING MIX · LIFETIME30%/70%
BUYS
14
SELLS
32
TOTAL VALUE
$19.29M
COMPANIES
1
ACTIVE SINCE
Oct 2020
HOLDINGS NOW
2,367,206
AVG SELL PX
$14.89
TRADE KIND
SHOWING 46 / 46
Trades · vs SPY
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Performance · forward returns vs SPY
31 backtested trades · 8 horizons · 11 pending
Forward-return performance of every backtestable P/S trade by Arnon Rosenthal, 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
7d31+77.42%-3.86%-0.01%-3.85%-7.38%-2.27
14d31+70.97%-4.26%+0.42%-4.68%-8.59%-1.76
30d31+77.42%-5.58%+1.29%-6.86%-13.30%-2.30
60d31+74.19%-11.51%+3.42%-14.93%-22.92%-3.77
90d31+80.65%-13.24%+2.67%-16.27%-19.64%-2.99
180d31(1 pending)+90.00%-33.72%+1.19%-39.16%-45.28%—
1y31(3 pending)+92.86%-49.41%-1.26%-51.85%-51.60%—
2y31(7 pending)+100.00%-75.25%+11.36%-87.33%-78.09%—
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
ALEC · 2,367,206 shares · as of Jun 2, 2026
0639,8121,279,6231,919,4352,559,246202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 14 buys / 32 sellsCOVERAGE · 23 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
87,216$1.97$172.2K2,367,206Jun 2, 2026Jun 3, 2026 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
116,246——2,454,422Mar 13, 2026Mar 13, 2026 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
81,864$2.12$173.8K2,338,176Mar 2, 2026Mar 3, 2026 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
104,347$1.12$116.8K2,420,040Dec 3, 2025Dec 3, 2025 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
522,500——522,500Nov 10, 2025Nov 12, 2025 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
174,167——2,524,387Nov 10, 2025Nov 12, 2025 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
51,562$2.50$128.7K2,350,220Sep 2, 2025Sep 4, 2025 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
45,700——45,700Jul 1, 2025Jul 1, 2025 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
137,125——2,551,782Jul 1, 2025Jul 1, 2025 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
52,087$1.34$69.7K2,414,657Jun 2, 2025Jun 4, 2025 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
40,330$1.47$59.2K2,466,744Mar 3, 2025Mar 5, 2025 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
52,172$2.52$131.4K2,507,074Dec 2, 2024Dec 3, 2024 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
610,500——2,559,246Oct 1, 2024Oct 2, 2024 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
26,499$4.88$129.4K1,948,746Sep 3, 2024Sep 4, 2024 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
25,135$4.80$120.6K1,975,245Jun 3, 2024Jun 4, 2024 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
18,837$6.92$130.4K2,000,380Mar 4, 2024Mar 5, 2024 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
23,831$5.56$132.5K2,019,217Dec 4, 2023Dec 6, 2023 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
397,600——2,043,048Oct 1, 2023Oct 3, 2023 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
132,500——132,500Oct 1, 2023Oct 3, 2023 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
5,647$5.19$29.3K1,645,448Sep 5, 2023Sep 6, 2023 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
5,255$6.90$36.3K1,651,095Jun 2, 2023Jun 5, 2023 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
15,186$6.22$94.4K1,656,350Mar 17, 2023Mar 21, 2023 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
42,990——1,671,536Mar 3, 2023Mar 21, 2023 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
5,849$8.32$48.7K1,628,546Mar 2, 2023Mar 3, 2023 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
119,446——119,446Oct 1, 2022Oct 4, 2022 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
179,169——1,634,395Oct 1, 2022Oct 4, 2022 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
55,000$25.00$1.38M1,972,875Nov 11, 2021Nov 12, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
55,000$25.00$1.38M2,027,875Nov 10, 2021Nov 12, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
15,000$25.00$375.0K652,500Nov 9, 2021Nov 10, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
55,000$25.00$1.38M2,082,875Nov 9, 2021Nov 10, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
15,000$25.00$375.0K667,500Nov 8, 2021Nov 10, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
55,000$25.00$1.38M2,137,875Nov 8, 2021Nov 10, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
15,000$25.00$375.0K682,500Nov 5, 2021Nov 8, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
55,000$25.00$1.38M2,192,875Nov 5, 2021Nov 8, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
15,000$25.00$375.0K697,500Nov 4, 2021Nov 8, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
55,000$25.00$1.38M2,247,875Nov 4, 2021Nov 8, 2021 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
417,213——417,213Oct 1, 2021Oct 4, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
9,625$25.10$241.6K2,302,875Sep 23, 2021Sep 23, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
94,717$25.29$2.40M2,317,783Sep 22, 2021Sep 23, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
5,283$26.10$137.9K2,312,500Sep 22, 2021Sep 23, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
8,462$26.56$224.7K2,412,500Sep 21, 2021Sep 22, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
91,538$26.07$2.39M2,420,962Sep 21, 2021Sep 22, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
8,046$26.33$211.8K2,512,500Sep 20, 2021Sep 22, 2021 ↗View →
ALEC
ALECTOR, INC.
SALE
Chief Executive Officer
91,954$25.76$2.37M2,520,546Sep 20, 2021Sep 22, 2021 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
150,000——1,455,226May 7, 2021May 11, 2021 ↗View →
ALEC
ALECTOR, INC.
PURCHASEGRANT
Stock grant
457,038——457,038Oct 1, 2020Oct 5, 2020 ↗View →
Other insiders · ALEC
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About this filer
CIK 0001757770
ROLE
Chief Executive Officer
PRIMARY
ALEC
COMPANIES
1
ACTIVE SINCE
Oct 2020
MARKETPEEL · /INSIDER/0001757770DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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