Altschuler Steven

Director at Lexeo Therapeutics, Inc. · on record since Nov 2, 2023
Director at Mead Johnson Nutrition Co · on record since Mar 12, 2009
Director at WW INTERNATIONAL, INC. · on record since Dec 18, 2012
Director at Spark Therapeutics, Inc. · on record since Jan 29, 2015
10% owner at Spark Therapeutics, Inc. · on record since Jan 29, 2015
Director at Covista Inc. · on record since May 14, 2018
Director at Towers Watson Delaware Holdings Inc. · on record since Jul 2, 2019
Director at 89bio, Inc. · on record since Mar 25, 2020
Director at Orchard Therapeutics plc · on record since Feb 3, 2020

Insider trading activity of Altschuler Steven

Transactions on record: 129; since Mar 12, 2009

Open-market buys: 5; $248.2K

Open-market sells: 0

Companies traded: 8; last filing Jun 29, 2026

Figures computed from official regulatory filings — .

Companies where Altschuler Steven has traded

Lexeo Therapeutics, Inc.3 tx · Jun 29, 2026
89bio, Inc.14 tx · Oct 30, 2025
Towers Watson Delaware Holdings Inc.25 tx · $75K · Jun 26, 2025
Orchard Therapeutics plc7 tx · Jan 24, 2024
Spark Therapeutics, Inc.16 tx · $3.5M · Dec 17, 2019
Covista Inc.2 tx · Nov 7, 2019
31 tx · Apr 3, 2019
31 tx · $2.2M · Jun 15, 2017

Track record of Altschuler Steven

Open-market buys: 5

Last buy: Oct 7, 2015

Enough buys on record, but none of them has a 63-day return yet — this happens when the shares stopped trading, or when the buys are too recent. Win rates will appear once returns mature.

Transaction history of Altschuler Steven

Co-insiders of Altschuler Steven

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
Lexeo Therapeutics, Inc.Listing on record	Jun 29, 2026	AwardD (derivative)	35,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-27,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-45,150	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-56,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-12,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-7,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-40,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Lexeo Therapeutics, Inc.Listing on record	Jun 30, 2025	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	Other	-68,399	—	n/a (No price was disclosed in the filing)	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	Exercise	40,486	—	n/a (No price was disclosed in the filing)	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	Award	735	—	n/a (No price was disclosed in the filing)	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	ExerciseD (derivative)	-40,486	—	n/a (No price was disclosed in the filing)	SEC
89bio, Inc.Listing unverified	Feb 5, 2025	AwardD (derivative)	56,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jan 2, 2025	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Oct 2, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jul 3, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Lexeo Therapeutics, Inc.Listing on record	Jun 27, 2024	AwardD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Apr 3, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Feb 5, 2024	AwardD (derivative)	45,150	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Orchard Therapeutics plcListing unverified	Jan 24, 2024	OtherD (derivative)	-46,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Orchard Therapeutics plcListing unverified	Jan 24, 2024	OtherD (derivative)	-105,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jan 3, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Oct 4, 2023	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jul 5, 2023	AwardD (derivative)	2,053	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Lexeo Therapeutics, Inc.Listing on record	Jun 29, 2026	AwardD (derivative)	35,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-27,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-45,150	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-56,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-12,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-7,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Oct 30, 2025	OtherD (derivative)	-40,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Lexeo Therapeutics, Inc.Listing on record	Jun 30, 2025	AwardD (derivative)	25,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	Other	-68,399	—	n/a (No price was disclosed in the filing)	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	Exercise	40,486	—	n/a (No price was disclosed in the filing)	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	Award	735	—	n/a (No price was disclosed in the filing)	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jun 26, 2025	ExerciseD (derivative)	-40,486	—	n/a (No price was disclosed in the filing)	SEC
89bio, Inc.Listing unverified	Feb 5, 2025	AwardD (derivative)	56,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jan 2, 2025	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Oct 2, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jul 3, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Lexeo Therapeutics, Inc.Listing on record	Jun 27, 2024	AwardD (derivative)	18,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Apr 3, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
89bio, Inc.Listing unverified	Feb 5, 2024	AwardD (derivative)	45,150	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Orchard Therapeutics plcListing unverified	Jan 24, 2024	OtherD (derivative)	-46,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Orchard Therapeutics plcListing unverified	Jan 24, 2024	OtherD (derivative)	-105,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jan 3, 2024	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Oct 4, 2023	AwardD (derivative)	3,696	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Towers Watson Delaware Holdings Inc.Listing unverified	Jul 5, 2023	AwardD (derivative)	2,053	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC