Leonard Braden Michael
- SEC CIK
- 0001373603
In the past year, 4 open-market sale filings worth $7.59M and no purchases.
Current role at each company
- OM Outset Medical, Inc.10% Owneras of May 18, 2026
- ACRS Aclaris Therapeutics, Inc.10% Owneras of Apr 27, 2026
- ADVM Adverum Biotechnologies, Inc.10% Owneras of Dec 5, 2025
- ASTC ASTROTECH Corp10% Owneras of Oct 7, 2025
- ANTX AN2 Therapeutics, Inc.10% Owneras of Jun 16, 2025
Show 9 more companies
- OKUR OnKure Therapeutics, Inc.Other: Former 10% owner of RPHMas of Oct 9, 2024
- TLIS Talis Biomedical Corp10% Owneras of Sep 9, 2024
- TECX Tectonic Therapeutic, Inc.Other: Former 10% owner of AVROBIOas of Jun 25, 2024
- CYT Cyteir Therapeutics, Inc.10% Owneras of Mar 25, 2024
- ELVN Enliven Therapeutics, Inc.10% Owneras of Jan 5, 2023
- RVP Retractable Technologies Inc10% Owneras of Dec 29, 2022
- MTCR Metacrine, Inc.10% Owneras of Dec 21, 2022
- STSA Satsuma Pharmaceuticals, Inc.10% Owneras of Nov 23, 2022
- IRON Disc Medicine, Inc.10% Owneras of Oct 27, 2022
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- $7.59M
- 4 filings
- Net
- −$7.59M
- Bought minus sold
- Companies
- 3
- With open-market trades
Trades
Every Form 4 that lists Leonard Braden Michael as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
ACRS Aclaris Therapeutics, Inc.
10% Owner8 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Apr 27, 2026 (view filing) | Apr 23 | 4 days | Leonard Braden Michael10% Owner | SSale | −300.0K | $4.53 | −$1.36M | −2.1%13.9M after | |
| Aug 5, 2024 (view filing) | Aug 2-5 | 3 days | Leonard Braden Michael10% Owner | PPurchase | +373.6K | $1.26 | +$471.6K | +2.7%14.3M after | 2 lots |
| Jul 31, 2024 (view filing) | Jul 30-31 | 1 day | Leonard Braden Michael10% Owner | PPurchase | +273.7K | $1.31 | +$358.8K | +2.0%13.9M after | 2 lots |
| Jul 22, 2024 (view filing) | Jul 18-22 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +154.7K | $1.30 | +$201.7K | +1.2%13.6M after | 3 lots |
| Jul 5, 2024 (view filing) | Jul 2-5 | 3 days | Leonard Braden Michael10% Owner | PPurchase | +352.4K | $1.15 | +$405.8K | +2.7%13.4M after | 3 lots |
| Jul 1, 2024 (view filing) | Jun 27-Jul 1 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +1.54M | $1.13 | +$1.74M | +13.4%13.1M after | 4 lots |
| Jun 18, 2024 (view filing) | Jun 14-18 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +545.0K | $1.16 | +$629.6K | +5.0%11.6M after | 3 lots |
| Jun 13, 2024 (view filing) | Jun 11-13 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +1.61M | $1.11 | +$1.78M | +17.1%11.0M after | 4 lots |
ADVM Adverum Biotechnologies, Inc.
10% Owner12 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 5, 2025 (view filing) | Dec 4 | 1 day | Leonard Braden Michael10% Owner | SSale | −524.6K | $4.19 | −$2.20M | −21.1%1.96M after | |
| Dec 3, 2025 (view filing) | Dec 1-3 | 2 days | Leonard Braden Michael10% Owner | SSale | −574.9K | $4.19 | −$2.41M | −19.1%2.43M after | 3 lots |
| Apr 28, 2025 (view filing) | Mar 26-27 | 33 days | Leonard Braden Michael10% Owner | PPurchase | +37.0K | $5.11 | +$189.0K | +35.3%141.8K after | Amended2 lotsDuplicate filing |
| Apr 28, 2025 (view filing) | Mar 26-27 | 33 daysLate | Leonard Braden Michael10% Owner | PPurchase | +37.0K | $5.11 | +$189.0K | +35.3%141.8K after | 2 lots |
| Apr 24, 2025 (view filing) | Apr 22 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +300.0K | $3.00 | +$900.0K | +10.9%3.06M after | |
| Apr 24, 2025 (view filing) | Apr 23 | 1 day | Leonard Braden Michael10% Owner | PPurchase | +50.0K | $2.98 | +$149.0K | +35.3%191.8K after | |
| Apr 2, 2025 (view filing) | Mar 31-Apr 2 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +34.8K | $4.23 | +$147.1K | +1.3%2.76M after | 2 lots |
| Mar 20, 2025 (view filing) | Mar 18-19 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +87.3K | $4.76 | +$416.0K | +3.4%2.69M after | 3 lots |
| Mar 20, 2025 (view filing) | Mar 20 | Same day | Leonard Braden Michael10% Owner | PPurchaseCommon Stovk | +30.6K | $5.61 | +$171.7K | +1.1%2.72M after | |
| Feb 28, 2025 (view filing) | Feb 26-28 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +336.8K | $4.28 | +$1.44M | +14.8%2.60M after | 3 lots |
ASTC ASTROTECH Corp
10% Owner9 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 7, 2025 (view filing) | Oct 3 | 4 days | Leonard Braden Michael10% Owner | SSale | −220.4K | $7.13 | −$1.57M | −100.0%0 after | |
| Oct 7, 2025 (view filing) | Oct 3 | 4 days | Leonard Braden Michael10% Owner | SSale | −9.17K | $5.83 | −$53.4K | −100.0%0 after | |
| Dec 2, 2022 (view filing)6:38 PM ET | Dec 2 | Same day | Leonard Braden Michael10% Owner | PPurchase | +191.0K | $0.3435 | +$65.6K | +3.0%6.61M after | |
| Nov 25, 2022 (view filing)11:02 AM ET | Nov 23 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +75.0K | $0.3287 | +$24.7K | +1.2%6.42M after | |
| Nov 18, 2022 (view filing)4:02 PM ET | Nov 16-18 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +390.5K | $0.3712 | +$144.9K | +6.6%6.35M after | 3 lots |
| Oct 18, 2022 (view filing)2:02 PM ET | Oct 14-18 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +216.4K | $0.3781 | +$81.8K | +3.8%5.96M after | 2 lots |
| Sep 27, 2022 (view filing)6:12 PM ET | Sep 23-27 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +357.9K | $0.4375 | +$156.6K | +6.7%5.74M after | 3 lots |
| Sep 7, 2022 (view filing)9:21 AM ET | Sep 1-2 | 6 daysLate | Leonard Braden Michael10% Owner | PPurchase | +252.1K | $0.4654 | +$117.3K | +4.9%5.38M after | 2 lots |
| Aug 25, 2022 (view filing)11:52 AM ET | Aug 23-24 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +479.3K | $0.4567 | +$218.9K | +10.3%5.14M after | 2 lots |
ANTX AN2 Therapeutics, Inc.
10% Owner3 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 16, 2025 (view filing) | May 28 | 19 daysLate | Leonard Braden Michael10% Owner | SSale | −200.0K | $1.09 | −$218.0K | −6.2%3.02M after | |
| May 30, 2025 (view filing) | May 28-30 | 2 days | Leonard Braden Michael10% Owner | SSale | −2.53M | $1.13 | −$2.87M | −44.0%3.22M after | 4 lots |
| Aug 14, 2024 (view filing) | Aug 14 | Same day | Leonard Braden Michael10% Owner | PPurchase | +1.50M | $1.04 | +$1.56M | +35.3%5.75M after |
OKUR OnKure Therapeutics, Inc.
Other: Former 10% owner of RPHM5 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 26, 2024 (view filing) | Sep 24-25 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +98.3K | $1.47 | +$144.9K | +2.9%3.46M after | 2 lots |
| Sep 19, 2024 (view filing) | Sep 17-18 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +56.1K | $1.36 | +$76.3K | +1.7%3.36M after | 2 lots |
| Sep 16, 2024 (view filing) | Sep 12-16 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +358.9K | $1.35 | +$483.8K | +12.2%3.30M after | 3 lots |
| Aug 14, 2024 (view filing) | Aug 13-14 | 1 day | Leonard Braden Michael10% Owner | PPurchase | +271.8K | $1.40 | +$379.8K | +10.2%2.94M after | 2 lots |
| May 16, 2024 (view filing) | May 14 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +414.3K | $1.54 | +$639.6K | +18.3%2.67M after | 2 lots |
TLIS Talis Biomedical Corp
10% Owner4 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 9, 2024 (view filing) | Sep 5-6 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +30.1K | $1.47 | +$44.1K | +13.8%248.7K after | 2 lots |
| Sep 5, 2024 (view filing) | Sep 3 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +500 | $4.00 | +$2.00K | +0.2%218.6K after | |
| Sep 4, 2024 (view filing) | Aug 30 | 5 days | Leonard Braden Michael10% Owner | PPurchase | +151 | $4.25 | +$641.75 | +0.1%218.6K after | |
| Aug 28, 2024 (view filing) | Aug 26-28 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +14.4K | $3.91 | +$56.2K | +7.1%218.0K after | 2 lots |
TECX Tectonic Therapeutic, Inc.
Other: Former 10% owner of AVROBIO1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 15, 2024 (view filing) | May 13-14 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +766.6K | $1.27 | +$972.8K | +19.2%4.77M after | 3 lots |
CYT Cyteir Therapeutics, Inc.
10% Owner2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 25, 2024 (view filing) | Mar 20 | 5 daysLate | Leonard Braden Michael10% Owner | PPurchaseCommon Stock, par value $0.001 per share | +170.6K | $2.95 | +$503.2K | +4.9%3.65M after | |
| Mar 19, 2024 (view filing) | Mar 18 | 1 day | Leonard Braden Michael10% Owner | PPurchaseCommon Stock, par value $0.001 per share | +113.8K | $3.01 | +$342.5K | +3.4%3.48M after |
ELVN Enliven Therapeutics, Inc.
10% Owner8 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 5, 2023 (view filing) | Jan 3 | 2 days | Leonard Braden Michael10% Owner | SSale | −1.25M | $4.00 | −$5.00M | −41.4%1.77M after | Amended |
| Dec 30, 2022 (view filing) | Dec 30 | Same day | Leonard Braden Michael10% Owner | SSale | −20.0K | $4.04 | −$80.8K | −8.0%230.0K after | |
| Dec 29, 2022 (view filing) | Dec 28-29 | 1 day | Leonard Braden Michael10% Owner | SSale | −20.0K | $4.04 | −$80.8K | −7.4%250.0K after | 2 lots |
| Dec 27, 2022 (view filing) | Dec 22-23 | 5 days | Leonard Braden Michael10% Owner | SSale | −50.0K | $4.06 | −$203.0K | −15.6%270.0K after | 2 lots |
| Jun 21, 2022 (view filing) | Jun 16 | 5 days | Leonard Braden Michael10% Owner | PPurchase | +83.2K | $1.11 | +$92.4K | +2.8%3.02M after | |
| Jun 7, 2022 (view filing) | Jun 3-6 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +33.4K | $1.14 | +$38.2K | +1.2%2.93M after | 2 lots |
| May 18, 2022 (view filing) | May 16-17 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +41.1K | $1.23 | +$50.5K | +1.4%2.90M after | 2 lots |
| Apr 25, 2022 (view filing) | Apr 21-22 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +560.0K | $1.40 | +$783.8K | +24.3%2.86M after | 2 lots |
RVP Retractable Technologies Inc
10% Owner7 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 29, 2022 (view filing) | Dec 29 | Same day | Leonard Braden Michael10% Owner | SSale | −3.00M | $1.60 | −$4.80M | −81.3%688.6K after | |
| Nov 30, 2022 (view filing) | Nov 28-29 | 2 days | Leonard Braden Michael10% Owner | SSale | −252.4K | $2.00 | −$505.5K | −6.4%3.69M after | 2 lots |
| May 25, 2022 (view filing) | May 23-25 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +63.5K | $3.98 | +$252.9K | +1.7%3.77M after | 2 lots |
| May 19, 2022 (view filing) | May 17-19 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +140.1K | $3.82 | +$534.9K | +3.9%3.70M after | 3 lots |
| May 16, 2022 (view filing) | May 12-16 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +139.9K | $3.96 | +$553.7K | +4.1%3.56M after | 3 lots |
| May 11, 2022 (view filing) | May 9-11 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +73.5K | $3.82 | +$280.9K | +2.2%3.42M after | 3 lots |
| May 2, 2022 (view filing) | Apr 28-May 2 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +430.0K | $3.73 | +$1.60M | +14.7%3.35M after | 3 lots |
MTCR Metacrine, Inc.
10% Owner4 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 21, 2022 (view filing)5:49 PM ET | Dec 19-21 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +271.6K | $0.3961 | +$107.6K | +4.6%6.16M after | 3 lots |
| Nov 9, 2022 (view filing)6:29 PM ET | Nov 7-9 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +164.3K | $0.4144 | +$68.1K | +2.9%5.89M after | 3 lots |
| Oct 31, 2022 (view filing)1:47 PM ET | Oct 27-28 | 4 days | Leonard Braden Michael10% Owner | PPurchase | +812.5K | $0.3905 | +$317.3K | +16.5%5.72M after | 2 lots |
| Oct 26, 2022 (view filing)4:45 PM ET | Oct 24-26 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +1.26M | $0.3511 | +$443.1K | +34.6%4.91M after | 3 lots |
STSA Satsuma Pharmaceuticals, Inc.
10% Owner2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 23, 2022 (view filing) | Nov 21 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +150.0K | $0.71 | +$106.5K | New position150.0K after | |
| Nov 16, 2022 (view filing) | Nov 14-15 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +6.44M | $0.6823 | +$4.39M | New position6.44M after | 3 lots |
IRON Disc Medicine, Inc.
10% Owner3 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 27, 2022 (view filing) | Oct 26 | 1 day | Leonard Braden Michael10% Owner | SSale | −22.5K | $2.09 | −$47.0K | −8.3%247.5K after | |
| Apr 13, 2022 (view filing) | Apr 12 | 1 day | Leonard Braden Michael10% Owner | PPurchase | +55.0K | $1.37 | +$75.3K | +25.6%270.0K after | |
| Apr 13, 2022 (view filing) | Apr 11-13 | 2 days | Leonard Braden Michael10% Owner | PPurchase | +900.0K | $1.40 | +$1.26M | +22.0%5.00M after | 3 lots |