Leonard Braden Michael

10% owner at Cyteir Therapeutics, Inc. · on record since Mar 25, 2024
Former 10% owner of AVROBIO at Tectonic Therapeutic, Inc. · on record since Jun 25, 2024
10% owner at OnKure Therapeutics, Inc. · on record since May 16, 2024
10% owner at Aptiv Solutions, Inc. · on record since May 15, 2024
10% owner at Adverum Biotechnologies, Inc. · on record since Jul 31, 2024
10% owner at Talis Biomedical Corp · on record since Aug 28, 2024
10% owner at AN2 Therapeutics, Inc. · on record since Aug 14, 2024
Former 10% owner of RPHM at OnKure Therapeutics, Inc. · on record since Oct 9, 2024
Director at BUILD-A-BEAR WORKSHOP INC · on record since May 3, 2011
10% owner at BUILD-A-BEAR WORKSHOP INC · on record since May 3, 2011
10% owner at Aclaris Therapeutics, Inc. · on record since Apr 27, 2026
10% owner at Outset Medical, Inc. · on record since May 12, 2026
10% owner at ProPhase Labs, Inc. · on record since Sep 24, 2014
Former Director of the Issuer at BUILD-A-BEAR WORKSHOP INC · on record since Sep 26, 2017
10% owner at Orchids Paper Products CO /DE · on record since Apr 10, 2019
10% owner at RETRACTABLE TECHNOLOGIES INC · on record since May 25, 2022
10% owner at Enliven Therapeutics, Inc. · on record since Apr 25, 2022
10% owner at Disc Medicine, Inc. · on record since Apr 13, 2022
10% owner at · on record since Sep 27, 2022
10% owner at · on record since Oct 31, 2022
10% owner at · on record since Nov 23, 2022

Insider trading activity of Leonard Braden Michael

Transactions on record: 229; since May 3, 2011

Open-market buys: 142; $31.4M

Open-market sells: 73; $49.8M

Companies traded: 17; last filing May 18, 2026

Figures computed from official regulatory filings — .

Companies where Leonard Braden Michael has traded

3 tx · $3.1M · May 18, 2026
22 tx · $7M · Apr 27, 2026
22 tx · $10.6M · Dec 5, 2025
16 tx · $2.4M · Oct 7, 2025
6 tx · $4.7M · Jun 16, 2025
13 tx · $1.7M · Oct 9, 2024
6 tx · $102.9K · Sep 9, 2024
2 tx · Jun 25, 2024
3 tx · $972.8K · May 15, 2024
2 tx · $845.7K · Mar 25, 2024
14 tx · $11.3M · Jan 5, 2023
17 tx · $8.5M · Dec 29, 2022
11 tx · $932.8K · Dec 21, 2022
4 tx · $4.5M · Nov 23, 2022

Track record of Leonard Braden Michael

Statistical track record

Free account

Open-market buys: 142

Last buy: Apr 23, 2025

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of Leonard Braden Michael

Co-insiders of Leonard Braden Michael

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Outset Medical, Inc.Listing on record	May 18, 2026	Other	323,000	5.00 USD	$1.6M		SEC
Outset Medical, Inc.Listing on record	May 12, 2026	Other	96,900	5.00 USD	$484.5K		SEC
Outset Medical, Inc.Listing on record	May 12, 2026	Other	197,600	5.00 USD	$988K		SEC
Aclaris Therapeutics, Inc.Listing on record	Apr 27, 2026	Sell	-300,000	4.53 USD	$1.4M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 5, 2025	Sell	-524,560	4.19 USD	$2.2M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 3, 2025	Sell	-300,000	4.20 USD	$1.3M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 3, 2025	Sell	-222,925	4.17 USD	$929.6K		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 3, 2025	Sell	-51,961	4.20 USD	$218.2K		SEC
ASTROTECH CorpListing on record	Oct 7, 2025	Sell	-9,166	5.83 USD	$53.4K		SEC
ASTROTECH CorpListing on record	Oct 7, 2025	Sell	-220,410	7.13 USD	$1.6M		SEC
AN2 Therapeutics, Inc.Listing on record	Jun 16, 2025	Sell	-200,000	1.09 USD	$218K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-7,000	1.03 USD	$7.2K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-425,000	1.01 USD	$429.3K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-100,000	1.16 USD	$116K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-2,000,000	1.16 USD	$2.3M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 28, 2025	Buy	20,407	5.04 USD	$102.9K	conv 26	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 28, 2025	Buy	16,593	5.19 USD	$86.1K	conv 24	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 24, 2025	Buy	50,000	2.98 USD	$149K	conv 31	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 24, 2025	Buy	300,000	3.00 USD	$900K	conv 51Unusual size	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 2, 2025	Buy	19,566	4.38 USD	$85.7K	conv 20	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 2, 2025	Buy	15,209	4.04 USD	$61.4K	conv 20	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 27, 2025	Buy	20,407	5.04 USD	$102.9K	conv 26	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 27, 2025	Buy	-16,593	5.19 USD	$86.1K	conv 26	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 20, 2025	Buy	30,600	5.61 USD	$171.7K	conv 20	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 20, 2025	Buy	18,000	4.60 USD	$82.8K	conv 20	SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Outset Medical, Inc.Listing on record	May 18, 2026	Other	323,000	5.00 USD	$1.6M		SEC
Outset Medical, Inc.Listing on record	May 12, 2026	Other	96,900	5.00 USD	$484.5K		SEC
Outset Medical, Inc.Listing on record	May 12, 2026	Other	197,600	5.00 USD	$988K		SEC
Aclaris Therapeutics, Inc.Listing on record	Apr 27, 2026	Sell	-300,000	4.53 USD	$1.4M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 5, 2025	Sell	-524,560	4.19 USD	$2.2M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 3, 2025	Sell	-300,000	4.20 USD	$1.3M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 3, 2025	Sell	-222,925	4.17 USD	$929.6K		SEC
Adverum Biotechnologies, Inc.Listing unverified	Dec 3, 2025	Sell	-51,961	4.20 USD	$218.2K		SEC
ASTROTECH CorpListing on record	Oct 7, 2025	Sell	-9,166	5.83 USD	$53.4K		SEC
ASTROTECH CorpListing on record	Oct 7, 2025	Sell	-220,410	7.13 USD	$1.6M		SEC
AN2 Therapeutics, Inc.Listing on record	Jun 16, 2025	Sell	-200,000	1.09 USD	$218K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-7,000	1.03 USD	$7.2K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-425,000	1.01 USD	$429.3K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-100,000	1.16 USD	$116K		SEC
AN2 Therapeutics, Inc.Listing on record	May 30, 2025	Sell	-2,000,000	1.16 USD	$2.3M		SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 28, 2025	Buy	20,407	5.04 USD	$102.9K	conv 26	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 28, 2025	Buy	16,593	5.19 USD	$86.1K	conv 24	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 24, 2025	Buy	50,000	2.98 USD	$149K	conv 31	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 24, 2025	Buy	300,000	3.00 USD	$900K	conv 51Unusual size	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 2, 2025	Buy	19,566	4.38 USD	$85.7K	conv 20	SEC
Adverum Biotechnologies, Inc.Listing unverified	Apr 2, 2025	Buy	15,209	4.04 USD	$61.4K	conv 20	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 27, 2025	Buy	20,407	5.04 USD	$102.9K	conv 26	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 27, 2025	Buy	-16,593	5.19 USD	$86.1K	conv 26	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 20, 2025	Buy	30,600	5.61 USD	$171.7K	conv 20	SEC
Adverum Biotechnologies, Inc.Listing unverified	Mar 20, 2025	Buy	18,000	4.60 USD	$82.8K	conv 20	SEC