undamentalytics Newsletter

Lexeo Therapeutics, Inc. insider trading

Every open-market purchase and sale by Lexeo Therapeutics, Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

No insider has bought shares on the open market in five years.

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.
Lexeo Therapeutics, Inc. insider open-market trades
DateInsiderTrade SharesPriceValue 1M after 3M after 6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Lexeo Therapeutics, Inc.’s insiders pay?

From November 26, 2024 to August 19, 2026, 8 insiders reported 1 open-market purchase and 19 sales not made under a pre-set plan in Lexeo Therapeutics, Inc. Twelve months after each purchase was reported, the shares were −8.9% against the S&P 500 on average (median −8.9%), over 1 purchase with a full year of prices; 0% beat the index. After sales, the shares moved −83.9% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on November 27, 2024 into $13,044 by November 2, 2026, +14.9% a year. It held shares 52% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $11,965 (+9.8% a year), and held throughout $12,924 (+14.3%).

$0$5.0k$10.0k 202420252026 $13.0k$12.9k$12.0k
Copying Lexeo Therapeutics, Inc.'s insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Lexeo Therapeutics, Inc.'s insiders from November 27, 2024, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 52% of the time.
Lexeo Therapeutics, Inc.: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Townsend Richard Nolan Chief Executive Officer 0 — — 8 −83.9% (1) August 19, 2026
Otero Jose Manuel Chief Operating Officer 0 — — 4 −83.9% (1) July 1, 2026
Adler Eric Chief Medical Officer 0 — — 2 −83.9% (1) October 17, 2025
Tamayo Louis Edward Chief Financial Officer 0 — — 2 — August 19, 2026
Bhalla Narinder Pal Chief Medical Officer 0 — — 1 — July 1, 2026
Cholmondeley Paula H Director 1 −8.9% (1) 0% 0 — November 26, 2024
Robertson Jenny Chief Legal Officer 0 — — 1 −83.9% (1) October 17, 2025
See Tai Sandi Chief Development Officer 0 — — 1 −83.9% (1) October 17, 2025

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded Lexeo Therapeutics, Inc.

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Lexeo Therapeutics, Inc. in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 1 selling crowd, −47.2%. One company's history is too short to judge by; the test across every company is the better guide.

MonthCrowd3 months on, vs S&P 5006 months12 months
October 31, 20255 selling−26.3%−47.2%not yet

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Total returns from the month end; past patterns are not a forecast.

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