RPM International Inc.
US ˙ NYSE ˙ US7496851038

SecurityRPM / RPM International Inc.
InstitutionBoston Trust Walden Corp
Latest Disclosed Ownership630,505 shares
Latest Disclosed Value $ 62,672,217
Boston Trust Walden Corp reports 2.67% decrease in ownership of RPM / RPM International Inc.

On April 24, 2026 - Boston Trust Walden Corp filed a 13F-HR form disclosing ownership of 630,505 shares of RPM International Inc. (US:RPM) valued at $62,672,197 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 647,788 shares of RPM International Inc.. This represents a change in shares of -2.67% during the quarter. The current value of the position is $65,452,724 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)
2026-04-24 2026-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 630,505 -17,283 -2.67 62,672 -6.97 0.3082
2026-01-28 2025-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 647,788 -4,928 -0.75 67,370 -12.44 0.3049
2025-10-17 2025-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 652,716 51,152 8.50 76,942 16.45 0.5645
2025-07-28 2025-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 601,564 92,358 18.14 66,076 12.17 0.4713
2025-04-21 2025-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 509,206 -395 -0.08 58,905 -6.07 0.4304
2025-01-24 2024-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 509,601 15,602 3.16 62,712 4.92 0.4400
2024-10-24 2024-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 493,999 -5,302 -1.06 59,774 11.18 0.4158
2024-07-19 2024-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 499,301 13,010 2.68 53,765 -7.05 0.3988
2024-04-22 2024-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 486,291 -2,405 -0.49 57,844 6.03 0.4126
2024-01-24 2023-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 488,696 13,860 2.92 54,553 21.18 0.4116
2023-10-18 2023-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 474,836 986 0.21 45,019 5.88 0.3773
2023-07-24 2023-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 473,850 29,371 6.61 42,519 9.65 0.3487
2023-04-19 2023-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 444,479 -67,324 -13.15 38,776 -22.25 0.3347
2023-01-20 2022-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 511,803 -48,188 -8.61 49,875 6.91 0.4385
2022-10-19 2022-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 559,991 -3,623 -0.64 46,653 5.15 0.4622
2022-07-22 2022-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 563,614 9,192 1.66 44,368 -1.74 0.4192
2022-04-20 2022-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 554,422 64,242 13.11 45,152 -8.80 0.3729
2022-01-21 2021-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 490,180 1,009 0.21 49,508 30.34 0.3975
2021-10-25 2021-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 489,171 -6,579 -1.33 37,984 -13.60 0.3363
2021-07-22 2021-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 495,750 130,103 35.58 43,963 30.90 0.3909
2021-04-21 2021-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 365,647 42,178 13.04 33,585 14.37 0.3252
2021-01-15 2020-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 323,469 7,267 2.30 29,365 12.11 0.3133
2020-10-14 2020-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 316,202 3,211 1.03 26,194 11.50 0.3262
2020-07-23 2020-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 312,991 -23,088 -6.87 23,493 17.48 0.3172
2020-04-24 2020-03-31 13F/A-1 RPM INTERNATIONAL COMMON STOCK 749685103 336,079 708 0.21 19,997 -22.32 0.3187
2020-04-21 2020-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 336,079 708 19,997 177,319.4604
2020-01-10 2019-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 335,371 9,514 2.92 25,743 14.81 0.2996
2019-10-21 2019-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 325,857 23,661 7.83 22,422 21.42 0.2819
2019-07-25 2019-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 302,196 -32,673 -9.76 18,467 -4.99 0.2403
2019-04-16 2019-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 334,869 11,784 3.65 19,436 2.34 0.2646
2019-01-17 2018-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 323,085 29,625 10.10 18,991 -0.35 0.3022
2018-10-23 2018-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 293,460 6,958 2.43 19,058 14.07 0.2625
2018-07-25 2018-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 286,502 20,991 7.91 16,708 32.01 0.2452
2018-04-13 2018-03-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 265,511 48,055 22.10 12,657 11.04 0.1920
2018-01-29 2017-12-31 13F RPM INTERNATIONAL COMMON STOCK 749685103 217,456 14,182 6.98 11,399 9.23 0.1671
2017-10-13 2017-09-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 203,274 53,005 35.27 10,436 27.31 0.1625
2017-07-19 2017-06-30 13F RPM INTERNATIONAL COMMON STOCK 749685103 150,269 150,269 8,197 0.1317
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.