Form4insider filings, from the source

Company · CIK 0001907108 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq

Lexeo Therapeutics, Inc. · LXEO

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $300k · 7net −$300k
$10k$10k$100k$100k$1M$1MbuyssalesJun 30Jul 8Jul 16Jul 25Aug 2Aug 10Aug 19

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 18, 2026 SForm 4 →Aug 19, 5:00 pm EDTLouis Edward TamayoChief Financial Officer4,117$4.91$20,20392,907−4.24%
Aug 18, 2026 SForm 4 →Aug 19, 5:00 pm EDTRichard Nolan TownsendChief Executive Officer, Director3,345$4.95$16,562374,472−0.89%
Aug 18, 2026 SForm 4 →Aug 19, 5:00 pm EDTJose Manuel OteroChief Operating Officer1,304$4.96$6,464136,178−0.95%
Jul 1, 2026 SForm 4 →Jul 1, 6:49 pm EDTLouis Edward TamayoChief Financial Officer4,641$4.49$20,83897,024−4.56%
Jul 1, 2026 SForm 4 →Jul 1, 6:49 pm EDTJose Manuel OteroChief Operating Officer4,666$4.48$20,904137,482−3.28%
Jul 1, 2026 SForm 4 →Jul 1, 6:48 pm EDTNarinder Pal BhallaChief Medical Officer22,306$4.42$98,59382,194−21.3%
Jul 1, 2026 SForm 4 →Jul 1, 6:47 pm EDTRichard Nolan TownsendChief Executive Officer, Director25,947$4.48$116,243377,817−6.43%
Jun 29, 2026 AForm 4 →Jul 1, 6:49 pm EDTLouis Edward TamayoChief Financial Officer12,000——101,665—
Jun 29, 2026 AForm 4 →Jul 1, 6:49 pm EDTJose Manuel OteroChief Operating Officer12,060——142,148—
Jun 29, 2026 AForm 4 →Jul 1, 6:48 pm EDTNarinder Pal BhallaChief Medical Officer55,000——104,500—
Jun 29, 2026 AForm 4 →Jul 1, 6:47 pm EDTRichard Nolan TownsendChief Executive Officer, Director67,000——403,764—

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Jun 25, 2026 AForm 4 →Jun 29, 4:45 pm EDTSteven AltschulerDirector35,000——35,000—
Jun 25, 2026 AForm 4 →Jun 29, 4:45 pm EDTMette Kirstine AggerDirector35,000——35,000—
Jun 25, 2026 AForm 4 →Jun 29, 4:44 pm EDTBrenda CooperstoneDirector35,000——35,000—
Jun 25, 2026 AForm 4 →Jun 29, 4:43 pm EDTReinaldo M DiazDirector35,000——35,000—
Jun 25, 2026 AForm 4 →Jun 29, 4:42 pm EDTTolga TangulerDirector35,000——35,000—
Jun 25, 2026 AForm 4 →Jun 29, 4:41 pm EDTTimothy Van HauwermeirenDirector35,000——35,000—
Jun 25, 2026 AForm 4 →Jun 29, 4:40 pm EDTPaula H CholmondeleyDirector35,000——35,000—