3M (MMM): Sen. Alan Armstrong disclosed a purchase, $1K

$1,001–$15,000
Reported range · official band, not an exact amount: 116 days
Disclosure lag

Traded: Mar 27, 2026
Disclosed: Jul 21, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

May 30, 2024Insider · First insider buy since May 2019Officer purchased ~$875 of MMM shares in the open market
Jun 27, 2024InsiderOfficer purchased ~$310 of MMM shares in the open market
Aug 15, 2024InsiderOfficer purchased ~$381 of MMM shares in the open market
Jan 27, 2026Government · Federal Register ruleReflectorization of Rail Freight Rolling Stock; Codifying Existing Waivers
Feb 2, 2026CongressDisclosed partial sale of MMM — reported range $1,001 - $15,000
Feb 3, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On February 3, 2026, the 3M Board of Directors elected Neil G. Mitchill, Jr. to 3M’s Board of Directors, effective February 6, 2026. Mr. Mitchill is the Executive Vice President and Chief Financial Officer of RTX Corporation.”
Feb 4, 2026CongressDisclosed sale of MMM — reported range $1,001 - $15,000
Feb 9, 2026Insider · 2 peopleInsiders: 2 sales (~$3.7M)
Feb 11, 2026Insider · 1 personInsiders: 5 sales (~$889K)
Mar 26, 20265% stakeThe Vanguard Group reported a passive stake (13G)
Mar 27, 2026 · this disclosureCongressDisclosed purchase of MMM — reported range $1,001 - $15,000

What came next

How to read Senate eFD periodic transaction report

The STOCK Act is a 2012 US law that requires members of Congress, and some senior staff, to publicly report their stock trades, and those of their spouse and dependent children, within 45 days.

Full guide: What is the STOCK Act?

What else is on file for 3M

For 3M, OQRO holds 5 insider filings (SEC Form 4 or Form 144), 2 Congress trade reports and 16 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its MMM page.

Other recent filings by Sen. Alan Armstrong

The full history of Sen. Alan Armstrong is on the profile page.

Other disclosures at 3M

Everything OQRO holds on this company is on its MMM page.

3M (MMM)Sen. Alan Armstrong disclosed a purchase $1K–$15K