Question 1

Who are the insiders buying 3M CO stock?

Accepted Answer

InsiderAct tracks all open-market purchases of 3M CO stock by corporate insiders — including officers, directors, and shareholders owning more than 10% — sourced from public SEC Form 4 filings.

Question 2

What does insider buying at a company mean?

Accepted Answer

When a corporate officer, director, or major shareholder purchases their own company's stock on the open market using personal funds, it signals confidence in the company's outlook. This is especially meaningful when multiple insiders buy within the same 7–14 day window (cluster buying) or when the purchase size exceeds $100,000.

Question 3

How do I find cluster buying signals for a company?

Accepted Answer

InsiderAct automatically detects cluster buying — two or more insiders independently purchasing shares within a 14-day window. When a cluster buy signal is active for a company, it appears prominently on the company's InsiderAct page and on the Signals tab.

Question 4

Has 3M CO had any recent large insider purchases?

Accepted Answer

InsiderAct tracks all open-market purchases of $100,000 or more at 3M CO. Large insider purchases are flagged as high-conviction signals because they represent meaningful personal capital commitments by executives or directors who have direct visibility into the company's operations and prospects.

Question 5

Where do the insider transactions on this page come from?

Accepted Answer

All transactions shown on InsiderAct company pages are sourced directly from SEC EDGAR Form 4 filings — the mandatory public disclosures that corporate insiders must submit within 2 business days of any stock transaction. InsiderAct ingests these filings in near real time and filters for open-market purchases and sales.


2026-05-04	2026-05-01	Reinseth Theresa E	CAO	Exercise Conversion	1,441	$142.50	$205,343
2026-05-04	2026-05-01	Reinseth Theresa E	CAO	Tax Payment	517	$142.50	$73,673
2026-05-04	2026-05-01	Brown William M	CEO	Tax Payment	3,912	$142.50	$557,460
2026-05-04	2026-05-01	Brown William M	CEO	Exercise Conversion	8,578	$142.50	$1,222,365
2026-05-04	2026-05-01	Banovetz John Patrick	EVP	Exercise Conversion	13,420	$142.50	$1,912,350
2026-05-04	2026-05-01	Banovetz John Patrick	EVP	Tax Payment	6,120	$142.50	$872,100
2026-02-12	2026-02-11	Reinseth Theresa E	CAO	Exercise Conversion	3,349	$0.00	$0
2026-02-12	2026-02-11	Reinseth Theresa E	CAO	Sale	1,946	$172.73	$336,133
2026-02-12	2026-02-11	Reinseth Theresa E	CAO	Sale	1,796	$172.79	$310,331
2026-02-12	2026-02-11	Reinseth Theresa E	CAO	Sale	1,123	$172.72	$193,965

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