William W. Brooke

Executive

Insider activity · 24 months1 buy0 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 1 buy · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Company

▲ Purchases (1 ops.)

€55k

▼ Sales (0 ops.)

—

Latest filing published 22 Jun 2026 for Maxcyte, INC.. Read the official filing

Filing timeline

BuySale

William W. Brooke

Insider track record

Disclosed buys

Disclosed sells

Signal history

No signal scores available.

Closed purchases

Market purchases

Not enough history yet: 1 closed purchase, at least 2 are needed.

Purchases by company

Maxcyte, INC. 1 purchase · last 13 Aug 2025

Since each purchase

Maxcyte, Inc.
Filed 13 Aug 2025 · 431 days ago · €55k
-6.4%
Entry US$1.41 · Close at T+365 US$1.32

Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.

William W. Brooke: trading record in brief

William W. Brooke discloses dealings in Maxcyte, Inc. to SEC (Form 4). In total, 4 filings cover trades dated from 11 June 2024 to 17 June 2026.

On the market, this insider has only ever bought: 1 purchase, €55k in total. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. Other entries cover 3 share grants.

The record was last updated on 22 June 2026 with a share grant in Maxcyte, Inc. The last purchase on record was published on 13 August 2025, which is 431 days ago. The median gap between a trade and its publication by SEC (Form 4) is 5 days. US insiders must file a Form 4 within two business days of a trade. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.