Nichols Weston
- SEC CIK
- 0001746376
In the past year, 8 open-market purchase filings worth $17.0M and no sales.
Current role at each company
- CRNX Crinetics Pharmaceuticals, Inc.Directoras of Sep 1, 2026
- KRRO Korro Bio, Inc.10% Owneras of Aug 13, 2026
- PASG Passage BIO, Inc.10% Owneras of Jun 29, 2026
- TCRX TScan Therapeutics, Inc.10% Owneras of Dec 23, 2025
- CGEM Cullinan Therapeutics, Inc.10% Owneras of Oct 30, 2025
Show 1 more company
- NEUP Neuphoria Therapeutics Inc.10% Owneras of Oct 23, 2025
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
- $17.0M
- 8 filings
- Sold
- –
- 0 filings
- Net
- +$17.0M
- Bought minus sold
- Companies
- 5
- With open-market trades
Trades
Every Form 4 that lists Nichols Weston 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.
KRRO Korro Bio, Inc.
10% Owner2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 13, 2026 (view filing)9:54 AM ET | Aug 6-10 | 7 daysLate | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.001 par value per share | +6.68K | $11.79 | +$78.8K | +0.4%1.54M after | 2 lots |
| Apr 2, 2026 (view filing)12:00 PM ET | Mar 31 | 2 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.001 par value per share | +520 | $10.60 | +$5.51K | 0.0%1.54M after |
PASG Passage BIO, Inc.
10% Owner8 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 29, 2026 (view filing)4:30 PM ET | Jun 25 | 4 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +50.1K | $4.12 | +$206.1K | +8.0%673.8K after | |
| Sep 15, 2025 (view filing)8:05 PM ET | Sep 11 | 4 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share (Common Stock) | +325 | $6.96 | +$2.26K | +0.1%592.0K after | |
| Sep 15, 2025 (view filing)8:05 PM ET | Sep 12-15 | 3 days | Nichols Weston and 1 other10% Owner | PPurchase | +31.7K | $6.99 | +$221.5K | +5.4%623.7K after | 2 lots |
| Jul 24, 2025 (view filing)6:12 PM ET | Jul 22 | 2 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +13.1K | $5.44 | +$71.3K | +2.8%476.0K after | |
| Jul 24, 2025 (view filing)6:12 PM ET | Jul 23-24 | 1 day | Nichols Weston and 1 other10% Owner | PPurchase | +115.7K | $5.72 | +$662.5K | +24.3%591.7K after | 2 lots |
| Dec 31, 2024 (view filing)4:05 PM ET | Dec 27 | 4 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share | +373.6K | $0.6451 | +$241.0K | +4.2%9.26M after | |
| Nov 27, 2024 (view filing)6:11 PM ET | Nov 25 | 2 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +260.0K | $0.5641 | +$146.7K | +3.1%8.69M after | |
| Nov 27, 2024 (view filing)6:11 PM ET | Nov 26-27 | 1 day | Nichols Weston and 1 other10% Owner | PPurchase | +196.4K | $0.7021 | +$137.9K | +2.3%8.88M after | 2 lots |
TCRX TScan Therapeutics, Inc.
10% Owner11 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Dec 23, 2025 (view filing)6:17 PM ET | Dec 19 | 4 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +80.1K | $0.8989 | +$72.0K | +1.0%7.94M after | |
| Dec 23, 2025 (view filing)6:17 PM ET | Dec 22-23 | 1 day | Nichols Weston and 1 other10% Owner | PPurchase | +81.7K | $0.8999 | +$73.6K | +1.0%8.02M after | 2 lots |
| May 21, 2025 (view filing)4:49 PM ET | May 19 | 2 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +1.39M | $1.20 | +$1.67M | +25.9%6.75M after | |
| May 21, 2025 (view filing)4:49 PM ET | May 20 | 1 day | Nichols Weston and 1 other10% Owner | PPurchase | +1.20M | $1.20 | +$1.44M | +17.8%7.95M after | |
| Dec 30, 2024 (view filing)4:15 PM ET | Dec 26 | 4 days | Nichols Weston and 1 other10% Owner | PPurchase | +7.50M | $4.00 | +$30.0M | –7.50M after | Derivative |
| Dec 16, 2024 (view filing)4:26 PM ET | Dec 12 | 4 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +31.8K | $3.01 | +$95.6K | +0.6%5.26M after | |
| Dec 16, 2024 (view filing)4:26 PM ET | Dec 13 | 3 days | Nichols Weston and 1 other10% Owner | PPurchase | +100.0K | $2.90 | +$290.1K | +1.9%5.36M after | |
| Nov 19, 2024 (view filing)4:26 PM ET | Nov 15 | 4 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share | +947 | $4.34 | +$4.11K | 0.0%5.23M after | |
| Apr 23, 2024 (view filing)4:15 PM ET | Apr 19 | 4 days | Nichols Weston and 1 other10% Owner | PPurchase | +5.00M | $7.13 | +$35.6M | –5.00M after | Derivative |
| Jun 2, 2023 (view filing)5:35 PM ET | May 31 | 2 days | Nichols Weston and 1 other10% Owner | SSaleCommon stock, $0.0001 par value per share Common Stock | −10.0K | $2.51 | −$25.1K | −0.2%5.24M after |
CGEM Cullinan Therapeutics, Inc.
10% Owner5 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 30, 2025 (view filing)5:13 PM ET | Oct 28 | 2 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share | +165.7K | $8.40 | +$1.39M | +1.9%8.96M after | |
| Oct 21, 2025 (view filing)7:00 PM ET | Oct 14 | 7 daysLate | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +15.0K | $7.59 | +$114.0K | +0.2%8.56M after | |
| Oct 21, 2025 (view filing)7:00 PM ET | Oct 15-17 | 6 daysLate | Nichols Weston and 1 other10% Owner | PPurchase | +233.7K | $8.51 | +$1.99M | +2.7%8.80M after | 3 lots |
| Oct 10, 2025 (view filing)6:58 PM ET | Oct 8 | 2 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.0001 par value per share ("Common Stock") | +556.3K | $6.46 | +$3.59M | +7.8%7.65M after | |
| Oct 10, 2025 (view filing)6:58 PM ET | Oct 9-10 | 1 day | Nichols Weston and 1 other10% Owner | PPurchase | +903.3K | $6.90 | +$6.23M | +11.8%8.55M after | 2 lots |
NEUP Neuphoria Therapeutics Inc.
10% Owner1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 23, 2025 (view filing)7:49 PM ET | Oct 21 | 2 days | Nichols Weston and 1 other10% Owner | PPurchaseCommon stock, $0.00001 par value per share | +639.1K | $5.14 | +$3.28M | +270.6%875.3K after |