Skip to contentJohnston John Joseph — MAXCYTE, INC. insider: 82 transactions · InsiderLensJohnston John Joseph
- Director at MAXCYTE, INC. · on record since Jul 29, 2021
Insider trading activity of Johnston John Joseph
- Transactions on record
- 82
- since Aug 11, 2021
- Open-market buys
- 0
- Open-market sells
- 21
- $389.1K
- Companies traded
- 1
- last filing Jun 22, 2026
Figures computed from official regulatory filings — methodology.
Companies where Johnston John Joseph has traded
Track record of Johnston John Joseph
Insufficient history for a statistical track record (fewer than 5 open-market buys).
Transaction history of Johnston John Joseph
Co-insiders of Johnston John Joseph
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Casdin Partners Master Fund, L.P.MAXCYTE, INC.
| Company | Filed | Type | Qty | Price | Value · USD | Src |
|---|
| Jun 22, 2026 | AwardD | 49,579 | 0.00 USD | — | SEC |
| Jun 22, 2026 | Award | 30,421 | 0.00 USD | — | SEC |
| Jun 23, 2025 | AwardD | 50,790 | 0.00 USD | $0 | SEC |
| Jun 23, 2025 | Award | 29,210 | 0.00 USD | $0 | SEC |
| Jan 29, 2025 | Exercise | 3,000 | 2.93 USD | $8.8K | SEC |
| Jan 29, 2025 | ExerciseD | -3,000 | 0.00 USD | $0 | SEC |
| Jan 29, 2025 | Sell | -3,000 | 4.65 USD | $14K | SEC |
| Dec 30, 2024 | ExerciseD | -3,000 | 0.00 USD | $0 | SEC |
| Dec 30, 2024 | Sell | -3,000 | 4.01 USD | $12K | SEC |
| Dec 30, 2024 | Exercise | 3,000 | 2.93 USD | $8.8K | SEC |
| Dec 10, 2024 | Exercise | 891 | 2.93 USD | $2.6K | SEC |
| Dec 10, 2024 | Exercise | 1,121 | 1.64 USD | $1.8K | SEC |
| Dec 10, 2024 | ExerciseD | -505 | 0.00 USD | $0 | SEC |
| Dec 10, 2024 | Exercise | 505 | 2.93 USD | $1.5K | SEC |
| Dec 10, 2024 | Sell | -505 | 3.70 USD | $1.9K | SEC |
| Dec 10, 2024 | ExerciseD | -1,121 | 0.00 USD | $0 | SEC |
| Dec 10, 2024 | ExerciseD | -483 | 0.00 USD | $0 | SEC |
| Dec 10, 2024 | Sell | -2,495 | 3.79 USD | $9.5K | SEC |
| Dec 10, 2024 | ExerciseD | -891 | 0.00 USD | $0 | SEC |
| Dec 10, 2024 | Exercise | 483 | 2.93 USD | $1.4K | SEC |
| Oct 30, 2024 | ExerciseD | -3,000 | 0.00 USD | $0 | SEC |
| Oct 30, 2024 | Exercise | 3,000 | 2.93 USD | $8.8K | SEC |
| Oct 30, 2024 | Sell | -3,000 | 3.72 USD | $11.2K | SEC |
| Sep 30, 2024 | ExerciseD | -3,000 | 0.00 USD | $0 | SEC |
| Sep 30, 2024 | Exercise | 3,000 | 2.93 USD | $8.8K | SEC |