Keson-Brookes Maiken
- SEC CIK
- 0001693805
No open-market purchases or sales filed in the past year.
Current role at each company
- MURA Mural Oncology plcChief Legal Officeras of Dec 5, 2025
- RUBY Rubius Therapeutics, Inc.CLO & Corp. Secretaryas of Feb 1, 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
- –
- 0 filings
- Net
- –
- Bought minus sold
- Companies
- 0
- With open-market trades
Trades
Every Form 4 that lists Keson-Brookes Maiken 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.
MURA Mural Oncology plc
Chief Legal Officer5 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jul 23, 2025 (view filing) | Jul 22 | 1 day | Keson-Brookes MaikenSee Remarks | SSale | −2.57K | $2.48 | −$6.38K | −3.6%68.8K after | 10b5-1 |
| Jul 22, 2025 (view filing) | Jul 18 | 4 days | Keson-Brookes MaikenSee Remarks | SSale | −2.16K | $2.48 | −$5.35K | −2.9%71.4K after | 10b5-1 |
| Mar 5, 2025 (view filing) | Mar 4-5 | 1 day | Keson-Brookes MaikenSee Remarks | SSale | −2.73K | $3.41 | −$9.31K | −3.6%73.6K after | 2 lots10b5-1 |
| Dec 26, 2024 (view filing) | Dec 23 | 3 days | Keson-Brookes MaikenSee Remarks | SSale | −2.56K | $3.27 | −$8.35K | −5.8%41.3K after | 10b5-1 |
| Jul 18, 2024 (view filing) | Jul 18 | Same day | Keson-Brookes MaikenSee Remarks | SSale | −2.16K | $3.41 | −$7.36K | −4.7%43.9K after | 10b5-1 |
RUBY Rubius Therapeutics, Inc.
CLO & Corp. Secretary1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Feb 1, 2022 (view filing) | Feb 1 | Same day | Keson-Brookes MaikenCLO & Corp. Secretary | SSale | −2.73K | $6.57 | −$17.9K | −33.8%5.34K after |