Theresa E. Reinseth is President & CAO +1 at 3M CO (MMM). They have made 8 open-market trades across 1 company since 2021, most recently 2026-07-23.
CIK 0001772245
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MMM | 2,615 | $507K |
Shares reported on the most recent Form 4, priced at the 2026-07-24 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MMM | SELL | 2026-07-23 | 2026-07-24 | $169.42 | $157K | +4.3% | +2.5% | +0.5% |
| MMM | SELL | 2026-02-11 | 2026-02-12 | $172.75 | $889K | -5.1% | -14.1% | -15.7% |
| MMM | SELL | 2025-08-05 | 2025-08-06 | $150.63 | $1.0M | +0.6% | +2.2% | +5.7% |
| MMM | SELL | 2025-01-24 | 2025-01-27 | $149.95 | $570K | +0.7% | -2.6% | -8.8% |
| MMM | SELL | 2024-11-20 | 2024-11-21 | $127.71 | $264K | +2.2% | +1.0% | +17.6% |
| MMM | SELL | 2024-08-06 | 2024-08-07 | $124.12 | $261K | +3.8% | +5.0% | +3.3% |
| MMM | SELL | 2022-08-01 | 2022-08-02 | $143.32 | $228K | +7.3% | -11.5% | -11.4% |
| MMM | SELL | 2021-05-04 | 2021-05-05 | $199.54 | $7K | +1.9% | +2.4% | -0.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.