Aclaris Therapeutics, Inc.
Total Trades
38
Buys
9
Sells
26
Largest Trade
N/A
Insiders
9
Institutional Funds
89
Inst. Value
$1M+
Activist Filings
47
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Mehra Anand | Director | BUY | $1M+ | 667K | $2.25 | Nov 20, 2024 |
| Leonard Braden Michael | 10% Owner | BUY | $100K–$500K | 274K | $1.31 | Jul 31, 2024 |
| Leonard Braden Michael | 10% Owner | BUY | $1M+ | 1.5M | $1.13 | Jul 1, 2024 |
| Leonard Braden Michael | 10% Owner | BUY | $500K+ | 545K | $1.15 | Jun 18, 2024 |
| Leonard Braden Michael | 10% Owner | BUY | $1M+ | 1.6M | $1.11 | Jun 13, 2024 |
| Monahan Joseph | Chief Scientific O… | SELL | $15K–$50K | 6K | $5.08 | Oct 25, 2023 |
| Balthaser Kevin | CFO | BUY | $50K–$100K | 9K | $7.90 | Sep 7, 2023 |
| Loerop James | Chief Business Off… | BUY | $50K–$100K | 15K | $6.80 | Aug 28, 2023 |
| Monahan Joseph | Chief Scientific O… | SELL | $15K–$50K | 6K | $7.32 | Aug 22, 2023 |
| Monahan Joseph | Chief Scientific O… | SELL | $50K–$100K | 6K | $10.28 | Jun 22, 2023 |
| Manion Douglas J. | Pres and CEO | BUY | $15K–$50K | 6K | $7.86 | Mar 17, 2023 |
| Manion Douglas J. | Pres and CEO | BUY | $50K–$100K | 7K | $7.74 | Mar 9, 2023 |
| Walker Neal | Director | SELL | $500K+ | 59K | $12.50 | Mar 4, 2023 |
| Walker Neal | Director | EXERCISE | N/A | 157K | — | Mar 4, 2023 |
| Monahan Joseph | Chief Scientific O… | EXERCISE | N/A | 87K | — | Mar 4, 2023 |
| Monahan Joseph | Chief Scientific O… | SELL | $100K–$500K | 31K | $12.51 | Mar 4, 2023 |
| Balthaser Kevin | CFO | SELL | $15K–$50K | 2K | $12.45 | Mar 4, 2023 |
| Balthaser Kevin | CFO | EXERCISE | N/A | 6K | — | Mar 4, 2023 |
| Monahan Joseph | Chief Scientific O… | SELL | $50K–$100K | 5K | $13.06 | Feb 17, 2023 |
| Loerop James | Chief Business Off… | SELL | $50K–$100K | 4K | $13.89 | Feb 10, 2023 |
| Walker Neal | Director | SELL | $100K–$500K | 30K | $16.66 | Feb 3, 2023 |
| Walker Neal | Director | SELL | $500K+ | 40K | $15.11 | Jan 4, 2023 |
| Monahan Joseph | Chief Scientific O… | SELL | $50K–$100K | 5K | $15.88 | Dec 16, 2022 |
| SCHIFF ANDREW N | Director | SELL | $500K+ | 54K | $17.05 | Nov 14, 2022 |
| SCHIFF ANDREW N | Director | SELL | $500K+ | 41K | $17.01 | Oct 26, 2022 |
| SCHIFF ANDREW N | Director | SELL | $500K+ | 52K | $16.57 | Oct 19, 2022 |
| Monahan Joseph | Chief Scientific O… | SELL | $50K–$100K | 5K | $15.98 | Oct 19, 2022 |
| SCHIFF ANDREW N | Director | SELL | $100K–$500K | 7K | $16.16 | Oct 11, 2022 |
| SCHIFF ANDREW N | Director | SELL | $500K+ | 46K | $16.45 | Oct 6, 2022 |
| SCHIFF ANDREW N | Director | SELL | $100K–$500K | 20K | $15.14 | Jun 21, 2022 |
| Walker Neal | President and CEO | SELL | $1M+ | 70K | $15.15 | Apr 25, 2022 |
| Monahan Joseph | Chief Scientific O… | SELL | $100K–$500K | 30K | $16.28 | Apr 20, 2022 |
| Walker Neal | President and CEO | SELL | $500K+ | 56K | $15.91 | Mar 14, 2022 |
| Ruffo Frank | CFO | SELL | $100K–$500K | 13K | $15.55 | Mar 14, 2022 |
| Monahan Joseph | Chief Scientific O… | SELL | $100K–$500K | 27K | $15.71 | Mar 14, 2022 |
| Monahan Joseph | Chief Scientific O… | SELL | $1K–$15K | 383 | $12.68 | Feb 11, 2022 |
| Ruffo Frank | CFO | SELL | $15K–$50K | 1K | $12.66 | Feb 11, 2022 |
| Walker Neal | President and CEO | SELL | $15K–$50K | 4K | $12.66 | Feb 11, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 89 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 1.9M | $1M+ | SH |
| BML Capital Management, LLC | 14.3M | $1M+ | SH |
| Vivo Capital, LLC | 8.9M | $1M+ | SH |
| Decheng Capital LLC | 4.0M | $1M+ | SH |
| ACADIAN ASSET MANAGEMENT LLC | 2.1M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.1M | $1M+ | SH |
| Palo Alto Investors LP | 1.6M | $1M+ | SH |
| STATE STREET CORP | 1.5M | $1M+ | SH |
| Connor, Clark & Lunn Investment Management Ltd. | 1.4M | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 1.1M | $1M+ | SH |
| DEUTSCHE BANK AG\ | 987K | $1M+ | SH |
| Aldebaran Capital, LLC | 954K | $1M+ | SH |
| Bollard Group LLC | 804K | $1M+ | SH |
| Three Bridge Wealth Advisors, LLC | 715K | $1M+ | SH |
| ADAR1 Capital Management, LLC | 614K | $1M+ | SH |
| ADAR1 Capital Management, LLC | 614K | $1M+ | SH |
| Logos Global Management LP | 600K | $1M+ | SH |
| JPMORGAN CHASE & CO | 471K | $1M+ | SH |
| Aisling Capital Management LP | 434K | $1M+ | SH |
| HighTower Advisors, LLC | 306K | $500K+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 9, 2026
11.9%
14.3M shares
SC 13G/A · Jan 21, 2026
6.2%
6.7M shares
SC 13G/A · Jan 9, 2026
9.4%
11.3M shares
Adage Capital Management, L.P.
SC 13G/A · Nov 13, 2025
4.9%
5.3M shares
SC 13G · Jul 29, 2025
6.2%
6.7M shares
SC 13G/A · Jul 24, 2025
3.5%
3.8M shares
SC 13G · Jul 17, 2025
5.1%
5.5M shares
Rock Springs Capital Management LP
SC 13G/A · May 15, 2025
4.7%
5.0M shares
Adage Capital Management, L.P.
SC 13G/A · May 12, 2025
7.6%
8.2M shares
SC 13G · May 5, 2025
5.1%
5.5M shares
SC 13G/A · Apr 30, 2025
4.6%
5.0M shares
SC 13G/A · Feb 13, 2025
13.3%
14.3M shares
Adage Capital Management, L.P.
SC 13G · Feb 12, 2025
9.0%
9.6M shares
SC 13G · Nov 25, 2024
9.5%
11.3M shares
Rock Springs Capital Management LP
SC 13G · Nov 22, 2024
6.3%
6.8M shares
Vivo Opportunity Fund Holdings, L.P.
SC 13G · Nov 21, 2024
7.4%
8.0M shares
SC 13G/A · Nov 14, 2024
0.3%
6 shares
SC 13G/A · Oct 9, 2024
4.2%
3.0M shares
SC 13G/A · Jul 8, 2024
2.9%
2.0M shares
Venrock Healthcare Capital Partners II, L.P.
SC 13G/A · Feb 15, 2024
0.0%
0 shares
SC 13G/A · Feb 14, 2024
0.0%
0 shares
SC 13G/A · Feb 14, 2024
6.1%
6 shares
SC 13G · Feb 14, 2024
5.3%
3.8M shares
SC 13G/A · Feb 14, 2024
2.5%
1.8M shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2024
4.2%
3.0M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Feb 14, 2024
0.0%
0 shares
The Vanguard Group - 23-1945930
SC 13G · Feb 13, 2024
6.7%
4.7M shares
Foresite Capital Fund IV, L.P. (“FCF IV”)
SC 13G/A · Feb 13, 2024
0.0%
0 shares
SC 13G/A · Feb 1, 2024
4.9%
3.5M shares
SC 13G/A · Jan 25, 2024
8.3%
5.9M shares
SC 13G · Jan 16, 2024
6.4%
4.5M shares
SC 13G · Dec 11, 2023
5.1%
3.6M shares
Wellington Management Group LLP
SC 13G/A · Dec 11, 2023
0.0%
0 shares
SC 13G · Nov 24, 2023
6.1%
4.3M shares
SC 13G · Sep 5, 2023
4.7%
6 shares
Wellington Management Group LLP
SC 13G/A · Apr 10, 2023
11.1%
7.4M shares
Biotechnology Value Fund, L.P.
SC 13G · Mar 16, 2023
2.7%
1.8M shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2023
5.9%
4.0M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Feb 14, 2023
2.6%
1.7M shares
Foresite Capital Fund IV, L.P. (“FCF IV”)
SC 13G/A · Feb 13, 2023
4.2%
2.8M shares
SC 13G/A · Jan 31, 2023
7.6%
5.1M shares
SC 13G · Apr 25, 2022
7.1%
4.4M shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2022
6.3%
3.9M shares
Venrock Healthcare Capital Partners II, L.P.
SC 13G · Feb 14, 2022
7.5%
4.6M shares
Foresite Capital Fund III, L.P. (“FCF III”)
SC 13G/A · Feb 11, 2022
0.0%
0 shares
Renaissance Technologies LLC 26-0385758
SC 13G/A · Feb 10, 2022
2.7%
1.7M shares
Biotechnology Value Fund, L.P.
SC 13G · Jan 24, 2022
3.4%
2.1M shares