3M Company
US ˙ NYSE ˙ US88579Y1010

SecurityMMM / 3M Company
InstitutionTower Bridge Advisors
Latest Disclosed Ownership1,743 shares
Latest Disclosed Value $ 253,136
Tower Bridge Advisors reports 22.29% decrease in ownership of MMM / 3M Company

On May 12, 2026 - Tower Bridge Advisors filed a 13F-HR form disclosing ownership of 1,743 shares of 3M Company (US:MMM) valued at $253,136 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,243 shares of 3M Company. This represents a change in shares of -22.29% during the quarter. The current value of the position is $264,326 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F 3M Common 88579Y101 1,743 -500 -22.29 253 -29.53 0.0177
2026-02-13 2025-12-31 13F 3M COMMON 88579Y101 2,243 0 0.00 359 3.16 0.0363
2025-11-12 2025-09-30 13F 3M COMMON 88579Y101 2,243 100 4.67 348 6.75 0.0348
2025-08-11 2025-06-30 13F 3M COMMON 88579Y101 2,143 0 0.00 326 3.82 0.0351
2025-05-08 2025-03-31 13F 3M COMMON 88579Y101 2,143 -1,000 -31.82 315 -22.47 0.0352
2025-02-05 2024-12-31 13F 3M COMMON 88579Y101 3,143 56 1.81 406 -3.80 0.0432
2024-11-06 2024-09-30 13F 3M COMMON 88579Y101 3,087 3,087 422 0.0438
2024-04-29 2024-03-31 13F 3M COMMON 88579Y101 0 -3,017 -100.00 0 -100.00
2024-02-14 2023-12-31 13F 3M COMMON 88579Y101 3,017 -2,765 -47.82 330 -39.19 0.0284
2023-11-01 2023-09-30 13F 3M COMMON 88579Y101 5,782 -4,480 -43.66 541 -47.32 0.0501
2023-07-20 2023-06-30 13F 3M COM 88579Y101 10,262 -18,571 -64.41 1,027 -66.11 0.0942
2023-04-26 2023-03-31 13F 3M COMMON 88579Y101 28,833 -7,659 -20.99 3,031 -30.76 0.2482
2023-01-27 2022-12-31 13F 3M COMMON 88579Y101 36,492 -1,715 -4.49 4,376 3.67 0.3635
2022-11-14 2022-09-30 13F 3M COMMON 88579Y101 38,207 -1,533 -3.86 4,222 -17.91 0.3751
2022-07-21 2022-06-30 13F 3M COMMON 88579Y101 39,740 -27,358 -40.77 5,143 -48.52 0.4194
2022-05-05 2022-03-31 13F 3M COMMON 88579Y101 67,098 -966 -1.42 9,990 -17.38 0.6677
2022-02-09 2021-12-31 13F 3M COMMON 88579Y101 68,064 -2,889 -4.07 12,090 -2.86 0.7423
2021-10-28 2021-09-30 13F 3M COMMON 88579Y101 70,953 -1,293 -1.79 12,447 -13.27 0.8303
2021-08-10 2021-06-30 13F 3M COMMON 88579Y101 72,246 -7,160 -9.02 14,350 -6.20 0.9565
2021-05-12 2021-03-31 13F 3M COMMON 88579Y101 79,406 2,402 3.12 15,300 13.67 1.1518
2021-02-11 2020-12-31 13F 3M COMMON 88579Y101 77,004 -1,721 -2.19 13,460 6.73 1.0962
2020-11-13 2020-09-30 13F 3M COMMON 88579Y101 78,725 -3,062 -3.74 12,610 -1.15 1.2884
2020-07-22 2020-06-30 13F 3M COMMON 88579Y101 81,787 -10 -0.01 12,758 14.25 1.4305
2020-04-27 2020-03-31 13F 3M COMMON 88579Y101 81,797 7,665 10.34 11,166 -14.62 1.4657
2020-02-05 2019-12-31 13F 3M COMMON 88579Y101 74,132 -28,794 -27.98 13,078 -26.61 1.3815
2019-11-12 2019-09-30 13F 3M COMMON 88579Y101 102,926 3,945 3.99 17,822 3.87 1.9513
2019-08-06 2019-06-30 13F 3M COMMON 88579Y101 98,981 15,528 18.61 17,157 -1.05 1.9193
2019-04-30 2019-03-31 13F 3M COMMON 88579Y101 83,453 -1,590 -1.87 17,340 7.00 2.0127
2019-02-07 2018-12-31 13F 3M COMMON 88579Y101 85,043 -27,461 -24.41 16,204 -31.64 2.0876
2018-10-23 2018-09-30 13F 3M COMMON 88579Y101 112,504 -771 -0.68 23,706 6.38 2.4765
2018-08-09 2018-06-30 13F 3M COMMON 88579Y101 113,275 8,746 8.37 22,283 -2.89 2.4851
2018-05-02 2018-03-31 13F 3M COMMON 88579Y101 104,529 -1,803 -1.70 22,946 -8.32 2.5443
2018-01-30 2017-12-31 13F 3M COMMON 88579Y101 106,332 -2,020 -1.86 25,027 10.04 2.6844
2017-11-06 2017-09-30 13F 3M COMMON 88579Y101 108,352 -2,585 -2.33 22,743 -1.52 2.5846
2017-07-26 2017-06-30 13F 3M COMMON 88579Y101 110,937 -2,256 -1.99 23,096 6.64 2.6479
2017-05-02 2017-03-31 13F 3M COMMON 88579Y101 113,193 -1,700 -1.48 21,657 5.56 2.5287
2017-01-31 2016-12-31 13F 3M COMMON 88579Y101 114,893 -2,837 -2.41 20,516 -1.11 2.4867
2016-10-27 2016-09-30 13F 3M COMMON 88579Y101 117,730 -1,097 -0.92 20,748 -0.29 2.5262
2016-08-12 2016-06-30 13F 3M COMMON 88579Y101 118,827 -2,505 -2.06 20,809 2.92 2.5923
2016-05-12 2016-03-31 13F 3M COMMON 88579Y101 121,332 7,793 6.86 20,218 18.21 2.5251
2016-02-02 2015-12-31 13F 3M COMMON 88579Y101 113,539 -573 -0.50 17,104 5.72 2.2281
2015-11-13 2015-09-30 13F/A-1 3M COMMON 88579Y101 114,112 470 0.41 16,178 -7.74 2.2263
2015-11-12 2015-09-30 13F 3M COMMON 88579Y101 113,642 17,535
2015-08-13 2015-06-30 13F 3M COMMON 88579Y101 113,642 -189 -0.17 17,535 -6.61 2.2180
2015-05-14 2015-03-31 13F 3M COMMON 88579Y101 113,831 -2,364 -2.03 18,776 -1.66 2.3786
2015-02-19 2014-12-31 13F 3M COMMON 88579Y101 116,195 -1,108 -0.94 19,093 14.89 2.3476
2014-11-12 2014-09-30 13F 3M COMMON 88579Y101 117,303 -2,595 -2.16 16,619 -3.23 2.0963
2014-08-26 2014-06-30 13F 3M COMMON 88579Y101 119,898 -2,508 -2.05 17,174 3.43 2.1179
2014-05-08 2014-03-31 13F 3M COMMON 88579Y101 122,406 -1,682 -1.36 16,606 -4.59 2.1338
2014-02-10 2013-12-31 13F 3M COMMON 88579Y101 124,088 1,902 1.56 17,403 19.28 2.2846
2013-11-05 2013-09-30 13F 3M COMMON 88579Y101 122,186 -578 -0.47 14,590 8.69 2.0929
2013-07-24 2013-06-30 13F 3M COMMON 88579Y101 122,764 122,764 13,424 1.9898
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.