SEC Form 4 reporting owner

Merriman Andrew

Merriman Andrew has filed 6 Form 4 transactions reported between March 18, 2026 and September 9, 2026, as Chief Operating Officer of Castellum, Inc..

Name as filed: Merriman Andrew

Open-market buys, 24 mo

$35K

5 lines

Open-market sales, 24 mo

None

reported

Companies

with Form 4 filings

Latest transaction

Sep 9, 2026

transaction date

Roles and reported holdings

CTMCastellum, Inc.
Mar 18, 2026 – Sep 9, 2026
Chief Operating Officer
Held directly588,531 sh as of Sep 9, 2026 · Form 4
24 months: $35K bought

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 9, 2026	CTMChief Operating Officer	Open-market purchaseCode P · direct	10,000	$0.6200	$6K@ $0.6200	588,531	Form 4
Sep 9, 2026	CTMChief Operating Officer	Open-market purchaseCode P · direct	40,000	$0.6193	$25K@ $0.6193	578,531	Form 4
Jul 1, 2026	CTMChief Operating Officer	Open-market purchaseCode P · directAlso reported by Bell David T, MARTIN TAMMY L	1,202	$0.6120	$736@ $0.6120	538,531	Form 4
Mar 31, 2026	CTMChief Operating Officer	Grant or awardCode A · direct	1,329	$0.4544	$604@ $0.4544	537,329	Form 4
Mar 27, 2026	CTMChief Operating Officer	Open-market purchaseCode P · direct	2,000	$0.6426	$1K@ $0.6426	536,000	Form 4
Mar 18, 2026	CTMChief Operating Officer	Open-market purchaseCode P · direct	3,000	$0.7983	$2K@ $0.7983	534,000	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.