Johnston John Joseph — SEC Form 4 filings
SEC reporting owner CIK 1874850. 14 Form 4 filings on record with FilingPulse; latest filed 2026-06-22.
Transaction summary — filings shown
Covers all 14 filings on record, filed 2024-01-30 to 2026-06-22. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 12 legs across 11 filings — 46,000 shares, $197,503 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 36.
- Largest priced transaction: sale of 10,000 shares @ $3.99 ($39,900) in MAXCYTE, INC., filed 2024-07-01.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| MAXCYTE, INC. (MXCT) | Director | 14 | — | 12 legs · 46,000 sh · $197,503 | 36 |
Form 4 filings — Johnston John Joseph
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-06-22 | 4 | MAXCYTE, INC. (MXCT) | Grant/award (A): 30,421 @ $0 · Grant/award (A): 49,579 (derivative) @ $0 | EDGAR |
| 2025-06-23 | 4 | MAXCYTE, INC. (MXCT) | Grant/award (A): 29,210 @ $0 · Grant/award (A): 50,790 (derivative) @ $0 | EDGAR |
| 2025-01-29 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 3,000 @ $2.93 · Sale (S): 3,000 @ $4.64 · Option exercise (M): 3,000 (derivative) @ $0 | EDGAR |
| 2024-12-30 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 3,000 @ $2.93 · Sale (S): 3,000 @ $4.01 · Option exercise (M): 3,000 (derivative) @ $0 | EDGAR |
| 2024-12-10 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 505 @ $2.93 · Sale (S): 505 @ $3.70 · Option exercise (M): 891 @ $2.93 · Option exercise (M): 1,121 @ $1.64 · Option exercise (M): 483 @ $2.93 · Sale (S): 2,495 @ $3.79 · +4 more | EDGAR |
| 2024-10-30 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 3,000 @ $2.93 · Sale (S): 3,000 @ $3.72 · Option exercise (M): 3,000 (derivative) @ $0 | EDGAR |
| 2024-09-30 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 3,000 @ $2.93 · Sale (S): 3,000 @ $3.82 · Option exercise (M): 3,000 (derivative) @ $0 | EDGAR |
| 2024-08-28 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 3,000 @ $2.93 · Sale (S): 3,000 @ $4.28 · Option exercise (M): 3,000 (derivative) @ $0 | EDGAR |
| 2024-07-30 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 3,000 @ $2.93 · Sale (S): 3,000 @ $4.75 · Option exercise (M): 3,000 (derivative) @ $0 | EDGAR |
| 2024-07-01 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 5,044 @ $1.64 · Option exercise (M): 4,956 @ $2.93 · Sale (S): 10,000 @ $3.99 · Option exercise (M): 5,044 (derivative) @ $0 · Option exercise (M): 4,956 (derivative) @ $0 | EDGAR |
| 2024-06-13 | 4 | MAXCYTE, INC. (MXCT) | Grant/award (A): 21,367 @ $0 · Grant/award (A): 40,701 (derivative) @ $0 | EDGAR |
| 2024-03-28 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 5,000 @ $2.14 · Sale (S): 5,000 @ $4.41 · Option exercise (M): 5,000 (derivative) @ $0 | EDGAR |
| 2024-02-28 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 5,000 @ $2.14 · Sale (S): 5,000 @ $4.60 · Option exercise (M): 5,000 (derivative) @ $0 | EDGAR |
| 2024-01-30 | 4 | MAXCYTE, INC. (MXCT) | Option exercise (M): 5,000 @ $2.14 · Sale (S): 5,000 @ $5.12 · Option exercise (M): 5,000 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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