Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MAXCYTE, INC.MXCT · Entity 6608 | Director | June 17, 2026 | June 22, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
MAXCYTE, INC.
Report date June 17, 2026 · Filed June 22, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 181,300 |
Reported balance
After 2026-06-17 transaction · row 1
1 source rowRow 1 · 2026-06-17 · Grant · Acquired 30,421 · Balance 181,300 F1: These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. F2: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 17, 2027, subject to the reporting person's continuous service as of such vesting date. |
| Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.13 · Expires 2036-06-16 | Direct | 49,579 |
Reported balance
After 2026-06-17 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-06-17 · Grant · Acquired 49,579 · Balance 49,579 F2: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 17, 2027, subject to the reporting person's continuous service as of such vesting date. |
Filing footnotes · ownership attribution and instrument terms
F1: These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.
F2: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 17, 2027, subject to the reporting person's continuous service as of such vesting date.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| June 17, 2026 Filed Jun 22, 2026 20:25 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantStock Option (right to buy) · Derivative | 49,579 | $0.00 Strike: $1.13 | $0.00 |
DisclosureSEC source: 0000905148-26-003051 · form4.xml · derivative · entry 2 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 49,579 Underlying: Common Stock · 49,579 shares Expires 2036-06-16 F2 · derivative.exercise_date: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 17, 2027, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| June 17, 2026 Filed Jun 22, 2026 20:25 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantCommon Stock | 30,421 | $0.00 | $0.00 |
DisclosureSEC source: 0000905148-26-003051 · form4.xml · nonDerivative · entry 1 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 181,300 F1 · shares: These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. F2 · shares: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 17, 2027, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| August 13, 2025 Filed Aug 13, 2025 23:45 UTC | MAXCYTE, INC. MXCT · Entity 6608 | PurchaseCommon Stock | 50,000 | $1.29 | $64,500.00 |
DisclosureSEC source: 0000905148-25-002873 · form4.xml · nonDerivative · entry 1 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 150,879 Read SEC document |
| June 18, 2025 Filed Jun 23, 2025 22:37 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantStock Option (right to buy) · Derivative | 50,790 | $0.00 Strike: $2.11 | $0.00 |
DisclosureSEC source: 0000905148-25-002230 · form4.xml · derivative · entry 2 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50,790 Underlying: Common Stock · 50,790 shares Expires 2035-06-17 F2 · derivative.exercise_date: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 18, 2026, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| June 18, 2025 Filed Jun 23, 2025 22:37 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantCommon Stock | 29,210 | $0.00 | $0.00 |
DisclosureSEC source: 0000905148-25-002230 · form4.xml · nonDerivative · entry 1 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 100,879 F1 · shares: These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. F2 · shares: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 18, 2026, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| June 11, 2024 Filed Jun 13, 2024 21:27 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantStock Option (right to buy) · Derivative | 40,701 | $0.00 Strike: $4.68 | $0.00 |
DisclosureSEC source: 0001415889-24-016706 · form4-06132024_090617.xml · derivative · entry 2 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 40,701 Underlying: Common Stock · 40,701 shares Expires 2034-06-10 F2 · derivative.exercise_date: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 11, 2025, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| June 11, 2024 Filed Jun 13, 2024 21:27 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantCommon Stock | 21,367 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-24-016706 · form4-06132024_090617.xml · nonDerivative · entry 1 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 71,669 F1 · shares: These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. F2 · shares: This annual grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this grant vest on June 11, 2025, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| June 22, 2023 Filed Jun 23, 2023 21:39 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantStock Option (right to buy) · Derivative | 50,000 | $0.00 Strike: $4.57 | $0.00 |
DisclosureSEC source: 0001209191-23-039484 · doc4.xml · derivative · entry 1 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50,000 Underlying: Common Stock · 50,000 shares Expires 2033-06-21 F1 · derivative.exercise_date: This annual option grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this option vest on June 22, 2024, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| June 29, 2022 Filed Jul 8, 2022 20:04 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantStock Option (right to buy) · Derivative | 26,900 | $0.00 Strike: $4.82 | $0.00 |
DisclosureSEC source: 0001209191-22-041609 · doc4.xml · derivative · entry 1 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 26,900 Underlying: Common Stock · 26,900 shares Expires 2032-06-28 F1 · derivative.exercise_date: This annual option grant was made pursuant to the Issuer's Equity Grant Policy for non-employee directors. The shares underlying this option vest on June 29, 2023, subject to the reporting person's continuous service as of such vesting date. Read SEC document |
| August 09, 2021 Filed Aug 11, 2021 21:10 UTC | MAXCYTE, INC. MXCT · Entity 6608 | GrantStock Option (right to buy) · Derivative | 10,000 | $0.00 Strike: $16.63 | $0.00 |
DisclosureSEC source: 0001209191-21-050926 · doc4.xml · derivative · entry 1 Brooke William W · CIK 0001545337 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,000 Underlying: Common Stock · 10,000 shares Expires 2031-08-09 F1 · derivative.exercise_date: 25% of the shares underlying the option vest on August 9, 2022 and the remaining shares underlying the option vest in 36 equal monthly installments thereafter, subject to the Reporting Person's continuous service with the Issuer at each vesting date. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.