William W Brooke

CIK 1545337 · last filed 2026-06-22

William W Brooke is a corporate insider who has filed 10 SEC Form 4 insider transactions across 1 company since 2021. The most recent filing, for MXCT, was dated Jun 22, 2026. Across all open-market trades the lifetime net is +$64.5K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $225.7K across reported positions. 13 SEC filings were submitted jointly with Aldagen Holdings, LLC.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$225.7K

Companies

1

Total Filings

10

Lifetime Open-Market Net

$64.5K

Filer Profile

Reported Address

2100 THIRD AVENUE NORTH
SUITE 600
BIRMINGHAM, AL 35203

Related Filers

Aldagen Holdings, LLC — 13 joint filings, latest 2015-05-13

B. Jefferson Clark — 13 joint filings, latest 2015-05-13

Kathryne Carr — 5 joint filings, latest 2015-03-12

Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
MXCT	Director	181,300	$1.25	$225.7K	$64.5K	7	2026-06-22

Recent Filings

10 filings

Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-06-22	MXCT	Grant (A)	+30,421	$0	EDGAR
2025-08-13	MXCT	Buy (P)	+50,000	$64.5K	EDGAR
2025-06-23	MXCT	Grant (A)	+29,210	$0	EDGAR
2024-06-13	MXCT	Grant (A)	+21,367	$0	EDGAR
2023-06-23	MXCT	Grant (A)	—	$0	EDGAR
2022-07-08	MXCT	Grant (A)	—	$0	EDGAR
2021-08-11	MXCT	Grant (A)	—	$0	EDGAR
2014-12-31	—	Sell (S)	−900,000	-$315.0K
2013-02-15	—	Other (J)	−2,230,684	$0
2012-05-22	—	Conv (C)	+54,159,264	$0

Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.