MMM Congressional Stock Trades & Insider Buying (2026)

MMM insider buying and selling over the past year

Insiders at 3M CO only sold stock in the open market over the past year: 8 Form 4 sales totaling $20.17M, against no open-market purchases.

None of the 8 sales were flagged as Rule 10b5-1 plan trades, meaning each one was a discretionary decision at the time of filing. Activity clustered in 2026-02 (5 trades) and 2025-11 (2 trades); the latest filing in this window is dated 2026-02-11. The average open-market sale price was $169.59; the last close of $164.75 is 2.9% below that level, so sellers exited above the current price. The single largest trade was a sale of 25,055 shares worth $4.27M on 2026-02-09. Since the most recent filing the stock has moved -4.7%, from $172.85.

Where MMM trades relative to its one-year range

3M CO closed at $164.75 on 2026-10-16, inside a one-year range of $141.20 to $183.78. That puts the stock in the middle of its range, at 55.3% of the distance from low to high. Over one year the share price moved +8.8%, and over roughly three months +3.1%. Average daily volume over the last month was about 2,893,118 shares.

Across 83 companies in the same SEC industry group (SIC 38) with a full year of prices in Gemral Edge, the median one-year return was +13.2%. MMM is behind that median and beat 43% of that peer group on this measure.

Members of Congress who traded MMM

STOCK Act disclosures show 41 trades in MMM by 10 members of Congress over five years (24 purchases, 17 sales), most recently on 2026-05-27. The most active traders were Ro Khanna (D-CA), 13 trades; Julie Johnson (D-TX), 9 trades; Tommy Tuberville (R-AL), 6 trades; Josh Gottheimer (D-NJ), 5 trades; Julia Letlow (R-LA), 3 trades.

By party the trades split 29 by Democrats, 12 by Republicans; by chamber, 33 from the House, 8 from the Senate.

Compare MMM with indexed peers from the same industry group

These peers have full Gemral Edge dossiers and the closest one-year price move to MMM:

• DHR one-year return +8.6%
• BAX one-year return +10.1%
• TDY one-year return +10.2%
• ALGN one-year return +13.5%
• MDT one-year return -0.3%

Sources and method

Every figure above is computed from public filings stored in Gemral Edge, not estimated. Insider figures count only open-market purchases and sales reported on SEC Form 4; option exercises, grants and gifts are excluded because they do not reflect a decision to buy or sell at market prices.

• SEC EDGAR Form 4 (edge_insider_trades, codes P/S open-market only) — as of 2026-02-11
• edge_prices_eod (end-of-day close) — as of 2026-10-16
• House PTR / Senate eFD disclosures (edge_congress_trades) — as of 2026-05-27

MMM data questions

Are MMM insiders buying or selling stock?

Insiders at 3M CO only sold stock in the open market over the past year: 8 Form 4 sales totaling $20.17M, against no open-market purchases.

What is the one-year price range for MMM?

Based on end-of-day closes through 2026-10-16, MMM traded between $141.20 and $183.78, last closing at $164.75.

Has any member of Congress traded MMM stock?

Yes. 10 members disclosed 41 trades in MMM over five years; the most recent disclosed trade date is 2026-05-27.