3M MMM Insider Ownership

Updated Oct 11, 2026

Over the past year, MMM insiders sold $21 million of stock (123.44K shares) on the open market and bought none.

• 3M's open-market sales in the past 12 months came from 7 insiders; no insider bought.
• Zoe L. Dickson (EVP & Chief HR Officer) was MMM's largest open-market seller in the past 12 months, with $12.42 million of sales (73.03K shares); the latest was on February 9, 2026.
• The latest open-market trade in MMM stock by an insider was a sale of 3.63K shares for $663,430 by Rodriguez Beatriz Karina Chavez (Group President) on August 5, 2026.
• Away from the open market, MMM insiders received 72.34K shares in stock awards, acquired 215.57K shares through option exercises and conversions and gave up 73.9K shares to cover taxes or exercise prices over the last 12 months.
• Per Business Quant data, 3M insiders hold 520.09K shares in total based on their latest Form 4 filings, down 3.37% from 538.24K shares at the end of Q3 2025.
• Of the 520.09K shares held by 3M insiders, 434.17K shares (83.48%) are held directly and 85.92K shares (16.52%) indirectly, through trusts, partnerships, family members and other entities.
• MMM's insider total is spread across 26 insiders who have filed a Form 4 in the past two years.
• 3M's three largest insider shareholders, based on their latest Form 4 filings, are Michael F. Roman (Chairman of the Board, 193.4K shares), John Patrick Banovetz (Executive Vice President, 50.06K shares) and Kevin H. Rhodes (EVP, Chief Legal Officer & Secretary, 43.85K shares).
• Michael F. Roman holds 37.19% of the combined insider position in 3M.
• Institutional investors held 74.48% of 3M stock at the end of Q2 2026, while the latest Form 4 filings of its insiders account for about 0.10%; other investors, including the public, hold roughly 25.42%.
• In the last 12 months, 68 Form 4 filings with transactions in MMM stock came from 26 insiders.
• This summary of 3M insider activity covers Form 4 filings through October 9, 2026.