The largest holder of RPM International stock is BlackRock Advisors LLC, with 12.0 million shares (9.37% of the company), worth about $1.25 billion as of September 25, 2026. The 10 largest holders together own 50.6%.
In Q2 2026, 816 institutional holdings reports listed shares worth $12.40 billion.
Insiders reported 30 transactions in the last two years: 7 sales worth $1.66 million and no purchases. The newest one on file is from April 28, 2026 (Gordon Russell L, Chief Financial Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through April 28, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 12.0 million | 9.37% | $1.2B |
| Vanguard Portfolio Management LLC | 7.2 million | 5.63% | $747.0M |
| Vanguard Portfolio Management LLC | 7.1 million | 5.59% | $743.0M |
| Aristotle Capital Management LLC | 6.9 million | 5.42% | $720.0M |
| State Street Corporation | 6.8 million | 5.29% | $703.0M |
| Vanguard Capital Management LLC | 6.7 million | 5.26% | $698.0M |
| Vanguard Capital Management LLC | 5.8 million | 4.52% | $600.0M |
| Eaton Vance Management | 4.2 million | 3.29% | $437.0M |
| Allspring Global Investments LLC | 4.2 million | 3.25% | $432.0M |
| Victory Capital Management, Inc. (Investment Management) | 3.8 million | 3.00% | $398.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 816 | – | $12.4B |
| Q1 2026 | 773 | 106.0 million | $10.5B |
| Q4 2025 | 817 | 106.0 million | $11.0B |
| Q3 2025 | 788 | 106.0 million | $12.5B |
| Q2 2025 | 765 | 108.0 million | $11.9B |
| Q1 2025 | 804 | 107.0 million | $12.4B |
| Q4 2024 | 795 | 106.0 million | $13.1B |
| Q3 2024 | 761 | 108.0 million | $13.0B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Gordon Russell L | Apr 28, 2026 | Chief Financial Officer | Conversion of Exercise of derivative security at price 50.99 per share. | $1.5M |
| Kastner Janeen B | Apr 17, 2026 | Officer | Conversion of Exercise of derivative security at price 50.99 per share. | $1.5M |
| Kinser Timothy R. | Jan 21, 2026 | Officer | Sale at price 110.30 per share. | $379,560 |
| Nance Frederick R | Nov 12, 2025 | Director | Stock Gift at price 0.00 per share. | – |
| Nance Frederick R | Nov 11, 2025 | Director | Sale at price 107.98 per share. | $85,517 |
| Fazzolari Salvatore D | Oct 31, 2025 | Director | Sale at price 107.67 per share. | $40,376 |
| Deckard Jenniffer D | Oct 1, 2025 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Whited Elizabeth F. | Oct 1, 2025 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Pawlikowski Ellen M. | Oct 1, 2025 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Mapes Christopher L | Oct 1, 2025 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Carbonari Bruce A | Oct 1, 2025 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Livingston Robert A | Oct 1, 2025 | Director | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 30 insider transactions in the last two years.
BlackRock Advisors LLC, with 9.37% of the company (as of September 25, 2026). Next: Vanguard Portfolio Management LLC (5.63%) and Vanguard Portfolio Management LLC (5.59%).
816 institutional holdings reports listed RPM International shares in Q2 2026 worth $12.40 billion.
In the last two years insiders reported 7 sales and no purchases (30 transactions in all); the newest on file is from April 28, 2026.