The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 6, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 168 | $73.86 | $12K |
| Jul 1, 2026 | Willis J Kevin | Director | Grant(A) | 397 | $72.58 | $29K |
| Jul 1, 2026 | Segal Francis David | Director | Grant(A) | 328 | $72.58 | $24K |
| Jun 22, 2026 | Cotterman Ryan Joseph | VP, Chief Accounting Officer | Grant(A) | 2K | — | $0 |
| May 28, 2026 | Dyer Terrance M | SVP, Chief HR Officer | Sell(S) | 266 | $68.45 | $18K |
| May 28, 2026 | Dyer Terrance M | SVP, Chief HR Officer | Sell(S) | 30 | $68.57 | $2K |
| May 28, 2026 | Dyer Terrance M | SVP, Chief HR Officer | Sell(S) | 200 | $68.53 | $14K |
| May 1, 2026 | Platt Phillip John | SVP, Finance & CAO | Grant(A) | 1K | — | $0 |
| Apr 30, 2026 | Gulyas Diane H. | Director | Grant(A) | 2K | — | $0 |
| Apr 30, 2026 | Fernandez-Moreno Luis M | Director | Grant(A) | 2K | — | $0 |
| Apr 30, 2026 | Hoechner Bruce D. | Director | Grant(A) | 2K | — | $0 |
| Apr 30, 2026 | Narwold Karen G | Director | Grant(A) | 2K | — | $0 |
| Apr 30, 2026 | Willis J Kevin | Director | Grant(A) | 2K | — | $0 |
| Apr 30, 2026 | Lynch Frederick J | Director | Grant(A) | 2K | — | $0 |
| Apr 30, 2026 | Wright Benjamin G. | Director | Grant(A) | 2K | — | $0 |
| Apr 30, 2026 | Segal Francis David | Director | Grant(A) | 2K | — | $0 |
| Apr 7, 2026 | Li David H | President & CEO, Director | Tax withholding(F) | 13K | $70.57 | $925K |
| Apr 7, 2026 | Li David H | President & CEO, Director | Tax withholding(F) | 4K | $70.57 | $252K |
| Apr 1, 2026 | Willis J Kevin | Director | Grant(A) | 398 | $72.28 | $29K |
| Apr 1, 2026 | Segal Francis David | Director | Grant(A) | 329 | $72.28 | $24K |
| Mar 25, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 308 | $71.78 | $22K |
| Mar 2, 2026 | Dyer Terrance M | SVP, Chief HR Officer | Tax withholding(F) | 550 | $71.64 | $39K |
| Mar 2, 2026 | Hall Mary Dean | EVP, Chief Financial Officer | Tax withholding(F) | 747 | $71.64 | $54K |
| Mar 2, 2026 | Hall Mary Dean | EVP, Chief Financial Officer | Tax withholding(F) | 559 | $71.64 | $40K |
| Mar 2, 2026 | Hall Mary Dean | EVP, Chief Financial Officer | Tax withholding(F) | 1K | $71.64 | $98K |
| Mar 2, 2026 | Hall Mary Dean | EVP, Chief Financial Officer | Tax withholding(F) | 2K | $71.64 | $120K |
| Mar 2, 2026 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 224 | $71.64 | $16K |
| Mar 2, 2026 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 407 | $71.64 | $29K |
| Mar 2, 2026 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 99 | $71.64 | $7K |
| Mar 2, 2026 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 340 | $71.64 | $24K |
| Mar 2, 2026 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 351 | $71.64 | $25K |
| Mar 2, 2026 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 617 | $71.64 | $44K |
| Mar 2, 2026 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 217 | $71.64 | $16K |
| Mar 2, 2026 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 755 | $71.64 | $54K |
| Mar 2, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 195 | $71.64 | $14K |
| Mar 2, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 680 | $71.64 | $49K |
| Mar 2, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 103 | $71.64 | $7K |
| Mar 2, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 355 | $71.64 | $25K |
| Mar 2, 2026 | Clontz Clarence Reid Jr. | SVP, Operations | Tax withholding(F) | 270 | $71.64 | $19K |
| Mar 2, 2026 | Clontz Clarence Reid Jr. | SVP, Operations | Tax withholding(F) | 49 | $71.64 | $4K |
| Mar 2, 2026 | Clontz Clarence Reid Jr. | SVP, Operations | Tax withholding(F) | 264 | $71.64 | $19K |
| Mar 2, 2026 | Clontz Clarence Reid Jr. | SVP, Operations | Tax withholding(F) | 143 | $71.64 | $10K |
| Feb 27, 2026 | Li David H | President & CEO, Director | Grant(A) | 38K | — | $0 |
| Feb 27, 2026 | Dyer Terrance M | SVP, Chief HR Officer | Grant(A) | 4K | — | $0 |
| Feb 27, 2026 | Platt Phillip John | SVP, Finance & CAO | Grant(A) | 2K | — | $0 |
| Feb 27, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Grant(A) | 4K | — | $0 |
| Feb 27, 2026 | Shukov Michael N. | SVP and Pres, APT | Grant(A) | 1K | — | $0 |
| Feb 27, 2026 | Castillo Ruth | SVP and Pres, Perf Materials | Grant(A) | 4K | — | $0 |
| Feb 27, 2026 | Clontz Clarence Reid Jr. | SVP, Operations | Grant(A) | 2K | — | $0 |
| Feb 26, 2026 | Clontz Clarence Reid Jr. | SVP, Operations | Tax withholding(F) | 69 | $70.52 | $5K |
| Feb 26, 2026 | Clontz Clarence Reid Jr. | SVP, Operations | Grant(A) | 187 | — | $0 |
| Feb 26, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 94 | $70.52 | $7K |
| Feb 26, 2026 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Grant(A) | 192 | — | $0 |
| Feb 26, 2026 | Hall Mary Dean | EVP, Chief Financial Officer | Grant(A) | 2K | — | $0 |
| Feb 26, 2026 | Hall Mary Dean | EVP, Chief Financial Officer | Tax withholding(F) | 873 | $70.52 | $62K |
| Feb 26, 2026 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 108 | $70.52 | $8K |
| Feb 26, 2026 | Platt Phillip John | SVP, Finance & CAO | Grant(A) | 247 | — | $0 |
| Feb 26, 2026 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Grant(A) | 430 | $70.52 | $30K |
| Feb 26, 2026 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Grant(A) | 1K | — | $0 |
| Jan 2, 2026 | Willis J Kevin | Director | Grant(A) | 479 | $60.09 | $29K |
| Jan 2, 2026 | Segal Francis David | Director | Grant(A) | 396 | $60.09 | $24K |
| Oct 2, 2025 | Fernandez-Moreno Luis M | Director | Tax withholding(F) | 6K | $56.31 | $338K |
| Oct 1, 2025 | Willis J Kevin | Director | Grant(A) | 506 | $54.44 | $28K |
| Oct 1, 2025 | Segal Francis David | Director | Grant(A) | 414 | $54.44 | $23K |
| Aug 11, 2025 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 1K | $52.20 | $75K |
| Jul 7, 2025 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 169 | $45.34 | $8K |
| Jul 1, 2025 | Segal Francis David | Director | Grant(A) | 507 | $44.40 | $23K |
| Jul 1, 2025 | Willis J Kevin | Director | Grant(A) | 620 | $44.40 | $28K |
| May 1, 2025 | Segal Francis David | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Segal Francis David | Director | Grant(A) | 677 | $33.28 | $23K |
| May 1, 2025 | Willis J Kevin | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Willis J Kevin | Director | Grant(A) | 151 | $33.28 | $5K |
| May 1, 2025 | Hoechner Bruce D. | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Wright Benjamin G. | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Narwold Karen G | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Gulyas Diane H. | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Sansone Daniel F | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Lynch Frederick J | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Fernandez-Moreno Luis M | Director | Grant(A) | 4K | — | $0 |
| May 1, 2025 | Blackwell Jean | Director | Grant(A) | 4K | — | $0 |
| Apr 7, 2025 | Li David H | President & CEO | Grant(A) | 123K | — | $0 |
| Apr 1, 2025 | Willis J Kevin | Director | Grant(A) | 580 | $38.85 | $23K |
| Mar 25, 2025 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 310 | $43.07 | $13K |
| Feb 28, 2025 | Hulme Steven Paul | SVP and Pres, APT | Tax withholding(F) | 104 | $47.66 | $5K |
| Feb 28, 2025 | Hulme Steven Paul | SVP and Pres, APT | Tax withholding(F) | 94 | $47.66 | $4K |
| Feb 28, 2025 | Hulme Steven Paul | SVP and Pres, APT | Tax withholding(F) | 152 | $47.66 | $7K |
| Feb 28, 2025 | Hulme Steven Paul | SVP and Pres, APT | Tax withholding(F) | 278 | $47.66 | $13K |
| Feb 28, 2025 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 115 | $47.66 | $5K |
| Feb 28, 2025 | Platt Phillip John | SVP, Finance & CAO | Grant(A) | 3K | — | $0 |
| Feb 28, 2025 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 410 | $47.66 | $20K |
| Feb 28, 2025 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 225 | $47.66 | $11K |
| Feb 28, 2025 | Platt Phillip John | SVP, Finance & CAO | Tax withholding(F) | 107 | $47.66 | $5K |
| Feb 28, 2025 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Grant(A) | 7K | — | $0 |
| Feb 28, 2025 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 218 | $47.66 | $10K |
| Feb 28, 2025 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 621 | $47.66 | $30K |
| Feb 28, 2025 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 374 | $47.66 | $18K |
| Feb 28, 2025 | White Richard Allen JR | SVP and Pres, Perf Chemicals | Tax withholding(F) | 167 | $47.66 | $8K |
| Feb 28, 2025 | Dyer Terrance M | SVP, Chief HR Officer | Grant(A) | 5K | — | $0 |
| Feb 28, 2025 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Tax withholding(F) | 94 | $47.66 | $4K |
| Feb 28, 2025 | Fisher Ryan C. | SVP, Gen. Counsel & Secretary | Grant(A) | 5K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-04-26 → 2026-07-11. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).