Insider · CIK 0001874850
John Joseph Johnston
Files at MXCT (MAXCYTE, INC.). First filing Oct 30, 2024, latest Jan 29, 2025.
John Joseph Johnston files SEC Form 4 as director at MXCT (MAXCYTE, INC.). Since Oct 30, 2024, John Joseph Johnston has reported 0 open-market buys worth $0 and 4 open-market sells worth $48k, the latest filed on Jan 29, 2025.
A track record needs three past buys with six months of prices behind them; John Joseph Johnston has 0, so none is measured yet.
The newest scored trade: sold $14k of MXCT on Jan 27, 2025, filed Jan 29, 2025, scored 0 (weak), under a 10b5-1 plan.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MXCT: MAXCYTE, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 0Weak | MAXCYTE, INC. | $14k 3,000 shares | -2% | - | |
| 0Weak | MAXCYTE, INC. | $12k 3,000 shares | -2% | - | |
| 0Weak | MAXCYTE, INC. | $11k 3,000 shares | -2% | - | |
| 0Weak | MAXCYTE, INC. | $11k 3,000 shares | -2% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Dec 26, 2024 | MXCT MAXCYTE, INC. | 12,000 0.01% of outstanding | $49k | Dec 26, 2024 | $34k |
Transactions
Every row this insider has filed, 23 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 17, 2026 | MXCT MAXCYTE, INC. | AGrant or award Common Stock | +30,421 | $0.00 | $0 | 201,581 | Jun 22, 2026 |
| Jun 17, 2026 | MXCT MAXCYTE, INC. | AGrant or award Stock Option (right to buy)derivative | +49,579 | $0.00 | $0 | 49,579 | Jun 22, 2026 |
| Jun 18, 2025 | MXCT MAXCYTE, INC. | AGrant or award Common Stock | +29,210 | $0.00 | $0 | 171,160 | Jun 23, 2025 |
| Jun 18, 2025 | MXCT MAXCYTE, INC. | AGrant or award Stock Option (right to buy)derivative | +50,790 | $0.00 | $0 | 50,790 | Jun 23, 2025 |
| Jan 27, 2025 | MXCT MAXCYTE, INC. | MOption exercise Common Stock10b5-1 | +3,000 | $2.93 | $8,796 | 144,950 | Jan 29, 2025 |
| Jan 27, 2025 | MXCT MAXCYTE, INC. | SOpen-market sale Common Stock10b5-1 | -3,000 | $4.65 | $14k | 141,950 | Jan 29, 2025 |
| Jan 27, 2025 | MXCT MAXCYTE, INC. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -3,000 | $0.00 | $0 | 17,417 | Jan 29, 2025 |
| Dec 26, 2024 | MXCT MAXCYTE, INC. | MOption exercise Common Stock10b5-1 | +3,000 | $2.93 | $8,796 | 144,950 | Dec 30, 2024 |
| Dec 26, 2024 | MXCT MAXCYTE, INC. | SOpen-market sale Common Stock10b5-1 | -3,000 | $4.01 | $12k | 141,950 | Dec 30, 2024 |
| Dec 26, 2024 | MXCT MAXCYTE, INC. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -3,000 | $0.00 | $0 | 20,417 | Dec 30, 2024 |
| Dec 6, 2024 | MXCT MAXCYTE, INC. | MOption exercise Common Stock10b5-1 | +505 | $2.93 | $1,478 | 142,455 | Dec 10, 2024 |
| Dec 6, 2024 | MXCT MAXCYTE, INC. | SOpen-market sale Common Stock10b5-1 | -505 | $3.70 | $1,869 | 141,950 | Dec 10, 2024 |
| Dec 9, 2024 | MXCT MAXCYTE, INC. | MOption exercise Common Stock10b5-1 | +891 | $2.93 | $2,607 | 142,841 | Dec 10, 2024 |
| Dec 9, 2024 | MXCT MAXCYTE, INC. | MOption exercise Common Stock10b5-1 | +1,121 | $1.64 | $1,840 | 143,962 | Dec 10, 2024 |
| Dec 9, 2024 | MXCT MAXCYTE, INC. | MOption exercise Common Stock10b5-1 | +483 | $2.93 | $1,416 | 144,445 | Dec 10, 2024 |
| Dec 9, 2024 | MXCT MAXCYTE, INC. | SOpen-market sale Common Stock10b5-1 | -2,495 | $3.79 | $9,459 | 141,950 | Dec 10, 2024 |
| Dec 6, 2024 | MXCT MAXCYTE, INC. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -505 | $0.00 | $0 | 891 | Dec 10, 2024 |
| Dec 9, 2024 | MXCT MAXCYTE, INC. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -891 | $0.00 | $0 | 0 | Dec 10, 2024 |
| Dec 9, 2024 | MXCT MAXCYTE, INC. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -1,121 | $0.00 | $0 | 0 | Dec 10, 2024 |
| Dec 9, 2024 | MXCT MAXCYTE, INC. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -483 | $0.00 | $0 | 23,417 | Dec 10, 2024 |
| Oct 28, 2024 | MXCT MAXCYTE, INC. | MOption exercise Common Stock10b5-1 | +3,000 | $2.93 | $8,778 | 144,950 | Oct 30, 2024 |
| Oct 28, 2024 | MXCT MAXCYTE, INC. | SOpen-market sale Common Stock10b5-1 | -3,000 | $3.72 | $11k | 141,950 | Oct 30, 2024 |
| Oct 28, 2024 | MXCT MAXCYTE, INC. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -3,000 | $0.00 | $0 | 1,396 | Oct 30, 2024 |
Questions about John Joseph Johnston
Answered from the filings on this page, as of the latest one.
Is John Joseph Johnston buying or selling?
Not in the last 12 months. John Joseph Johnston's latest open-market trade on SEC Form 4 was sold $14k of MXCT on Jan 27, 2025.
How did John Joseph Johnston's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and John Joseph Johnston has 0.
Where does John Joseph Johnston file Form 4?
John Joseph Johnston has filed Form 4 at MXCT (MAXCYTE, INC.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.