SEC Form 4 reporting owner

MacLean Michael F

MacLean Michael F has filed 11 Form 4 transactions reported between January 7, 2026 and April 1, 2026, as Director of Camp4 Therapeutics Corp and Chief Financial Officer of Avidity Biosciences, Inc..

Name as filed: MacLean Michael F

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$472K

3 lines

Companies

with Form 4 filings

Latest transaction

Apr 1, 2026

transaction date

Roles and reported holdings

CAMPCamp4 Therapeutics Corp
Apr 1, 2026
Director
No common-stock holding reported on a purchase, sale, gift or withholding line.
RNAAvidity Biosciences, Inc.
Jan 7, 2026 – Feb 27, 2026
Chief Financial Officer
Held directly59,290 sh as of Jan 21, 2026 · Form 4
24 months: $472K sold

Transaction history

All 11 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Apr 1, 2026	CAMPDirector	Grant or awardCode A · direct	56,000	—	—	56,000	Form 4
Feb 27, 2026	RNAChief Financial Officer	Disposition to issuerCode D · direct	50,000	—	—	0	Form 4
Feb 27, 2026	RNAChief Financial Officer	Disposition to issuerCode D · direct	106,000	—	—	0	Form 4
Feb 27, 2026	RNAChief Financial Officer	Disposition to issuerCode D · direct	60,125	—	—	0	Form 4
Feb 27, 2026	RNAChief Financial Officer	Disposition to issuerCode D · direct	148,000	—	—	0	Form 4
Feb 27, 2026	RNAChief Financial Officer	Disposition to issuerCode D · direct	131,250	—	—	0	Form 4
Feb 27, 2026	RNAChief Financial Officer	Disposition to issuerCode D · direct	92,000	—	—	0	Form 4
Feb 27, 2026	RNAChief Financial Officer	Disposition to issuerCode D · direct	133,977	—	—	0	Form 4
Jan 21, 2026	RNAChief Financial Officer	Open-market saleCode S · direct	2,735	$72.45	$198K@ $72.45	59,290	Form 4
Jan 21, 2026	RNAChief Financial Officer	Open-market saleCode S · direct	1,807	$72.45	$131K@ $72.45	62,025	Form 4
Jan 7, 2026	RNAChief Financial Officer	Open-market saleCode S · direct	1,974	$72.23	$143K@ $72.23	63,832	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.