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 |
|---|---|---|---|---|---|---|
| Jun 15, 2026 | Purvis Edgar M Jr | Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Earl James F | Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Quinn John S | Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Quinn John S | Director | Grant(A) | 3K | $20.80 | $66K |
| Jun 15, 2026 | Haznedar Carolann I | Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Fanandakis Nicholas C | Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Laurion Timothy M | Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | O'Mara Rebecca Martinez | Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Minan Peter Francis | Executive Vice President & CFO | Grant(A) | 78K | — | $0 |
| Jun 15, 2026 | Minan Peter Francis | Executive Vice President & CFO | Grant(A) | 77K | — | $0 |
| Jun 15, 2026 | Reitemeier Christophe | President-Harsco Environmental | Grant(A) | 23K | — | $0 |
| Jun 15, 2026 | Reitemeier Christophe | President-Harsco Environmental | Grant(A) | 13K | — | $0 |
| Jun 15, 2026 | Romaninsky Samuel Darden | SVP and General Counsel | Grant(A) | 22K | — | $0 |
| Jun 15, 2026 | Romaninsky Samuel Darden | SVP and General Counsel | Grant(A) | 10K | — | $0 |
| Jun 15, 2026 | Lada Gary Raymond | SVP and President-Harsco Rail | Grant(A) | 18K | — | $0 |
| Jun 15, 2026 | Lada Gary Raymond | SVP and President-Harsco Rail | Grant(A) | 10K | — | $0 |
| Jun 15, 2026 | Lada Gary Raymond | SVP and President-Harsco Rail | Grant(A) | 11K | — | $0 |
| Jun 15, 2026 | Fenice Samuel C. | VP & Corporate Controller | Grant(A) | 9K | — | $0 |
| Jun 15, 2026 | Fenice Samuel C. | VP & Corporate Controller | Grant(A) | 5K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 144K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 144K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 7K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 21K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 21K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 6K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 10K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 20K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 19K | — | $0 |
| Jun 15, 2026 | Hochman Russell C. | President and CEO, Director | Grant(A) | 27K | — | $0 |
| Jun 5, 2026 | Minan Peter Francis | Executive Vice President & CFO | Buy(P) | 8K | $19.25 | $160K |
| Jun 3, 2026 | Purvis Edgar M Jr | Director | Buy(P) | 14K | $18.10 | $253K |
| Jun 3, 2026 | Hochman Russell C. | President and CEO, Director | Buy(P) | 52K | $19.43 | $1.0M |
| Jun 1, 2026 | Quinn John S | Director | Disposed to issuer(D) | 40K | — | $0 |
| Jun 1, 2026 | Purvis Edgar M Jr | Director | Disposed to issuer(D) | 102K | — | $0 |
| Jun 1, 2026 | O'Mara Rebecca Martinez | Director | Disposed to issuer(D) | 48K | — | $0 |
| Jun 1, 2026 | Laurion Timothy M | Director | Disposed to issuer(D) | 48K | — | $0 |
| Jun 1, 2026 | Haznedar Carolann I | Director | Disposed to issuer(D) | 95K | — | $0 |
| Jun 1, 2026 | Fanandakis Nicholas C | Director | Disposed to issuer(D) | 18K | — | $0 |
| Jun 1, 2026 | Earl James F | Director | Disposed to issuer(D) | 131K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 252K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 176K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 195K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 119K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 79K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 305K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 87K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 93K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 135K | — | $0 |
| Jun 1, 2026 | Grasberger F Nicholas III | Chairman and CEO, Director | Disposed to issuer(D) | 1.7M | — | $0 |
| Jun 1, 2026 | Kozak Jennifer Ott | Senior Vice President & CHRO | Disposed to issuer(D) | 27K | — | $0 |
| Jun 1, 2026 | Kozak Jennifer Ott | Senior Vice President & CHRO | Disposed to issuer(D) | 35K | — | $0 |
| Jun 1, 2026 | Kozak Jennifer Ott | Senior Vice President & CHRO | Disposed to issuer(D) | 49K | — | $0 |
| Jun 1, 2026 | Kozak Jennifer Ott | Senior Vice President & CHRO | Disposed to issuer(D) | 101K | — | $0 |
| Jun 1, 2026 | Lada Gary Raymond | SVP and President-Harsco Rail | Disposed to issuer(D) | 34K | — | $0 |
| Jun 1, 2026 | Lada Gary Raymond | SVP and President-Harsco Rail | Disposed to issuer(D) | 12K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 62K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 80K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 57K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 61K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 29K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 19K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 16K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 17K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 20K | — | $0 |
| Jun 1, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 273K | — | $0 |
| Jun 1, 2026 | Fenice Samuel C. | VP & Corporate Controller | Disposed to issuer(D) | 559 | — | $0 |
| Jun 1, 2026 | Fenice Samuel C. | VP & Corporate Controller | Disposed to issuer(D) | 74K | — | $0 |
| Jun 1, 2026 | Romaninsky Samuel Darden | VP, General Counsel & CCO | Disposed to issuer(D) | 55K | — | $0 |
| Jun 1, 2026 | Reitemeier Christophe | President-Harsco Environmental | Disposed to issuer(D) | 38K | — | $0 |
| Jun 1, 2026 | Reitemeier Christophe | President-Harsco Environmental | Disposed to issuer(D) | 66K | — | $0 |
| Jun 1, 2026 | Vadaketh Tom George | SVP and CFO | Disposed to issuer(D) | 103K | — | $0 |
| Jun 1, 2026 | Vadaketh Tom George | SVP and CFO | Disposed to issuer(D) | 144K | — | $0 |
| Jun 1, 2026 | Vadaketh Tom George | SVP and CFO | Disposed to issuer(D) | 413K | — | $0 |
| May 28, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 50K | — | $0 |
| May 28, 2026 | Hochman Russell C. | President & COO | Disposed to issuer(D) | 50K | $21.22 | $1.1M |
| May 28, 2026 | Hochman Russell C. | President & COO | Option exercise(M) | 50K | — | $0 |
| May 28, 2026 | Fenice Samuel C. | VP & Corporate Controller | Disposed to issuer(D) | 12K | — | $0 |
| May 28, 2026 | Fenice Samuel C. | VP & Corporate Controller | Disposed to issuer(D) | 12K | $21.22 | $254K |
| May 28, 2026 | Fenice Samuel C. | VP & Corporate Controller | Option exercise(M) | 12K | — | $0 |
| May 28, 2026 | Romaninsky Samuel Darden | VP, General Counsel & CCO | Disposed to issuer(D) | 11K | — | — |
| May 28, 2026 | Romaninsky Samuel Darden | VP, General Counsel & CCO | Disposed to issuer(D) | 11K | $21.22 | $240K |
| May 28, 2026 | Romaninsky Samuel Darden | VP, General Counsel & CCO | Option exercise(M) | 11K | — | $0 |
| May 28, 2026 | Reitemeier Christophe | President-Harsco Environmental | Disposed to issuer(D) | 24K | — | $0 |
| May 28, 2026 | Reitemeier Christophe | President-Harsco Environmental | Disposed to issuer(D) | 24K | $21.22 | $503K |
| May 28, 2026 | Reitemeier Christophe | President-Harsco Environmental | Option exercise(M) | 24K | — | $0 |
| May 28, 2026 | Vadaketh Tom George | SVP and CFO | Option exercise(M) | 90K | — | $0 |
| May 28, 2026 | Vadaketh Tom George | SVP and CFO | Disposed to issuer(D) | 90K | $21.22 | $1.9M |
| May 28, 2026 | Vadaketh Tom George | SVP and CFO | Option exercise(M) | 90K | — | $0 |
| May 20, 2026 | Fenice Samuel C. | VP & Corporate Controller | Option exercise(M) | 16K | — | $0 |
| May 20, 2026 | Fenice Samuel C. | VP & Corporate Controller | Tax withholding(F) | 8K | $19.53 | $147K |
| May 20, 2026 | Fenice Samuel C. | VP & Corporate Controller | Option exercise(M) | 16K | — | $0 |
| May 20, 2026 | Beswick Jeffrey A | SVP & Grp. Pres., Clean Earth | Option exercise(M) | 37K | — | $0 |
| May 20, 2026 | Beswick Jeffrey A | SVP & Grp. Pres., Clean Earth | Tax withholding(F) | 16K | $19.53 | $321K |
| May 20, 2026 | Beswick Jeffrey A | SVP & Grp. Pres., Clean Earth | Option exercise(M) | 37K | — | $0 |
| May 20, 2026 | Vadaketh Tom George | SVP and CFO | Option exercise(M) | 166K | — | $0 |
| May 20, 2026 | Vadaketh Tom George | SVP and CFO | Tax withholding(F) | 76K | $19.53 | $1.5M |
| May 20, 2026 | Vadaketh Tom George | SVP and CFO | Option exercise(M) | 166K | — | $0 |
| May 20, 2026 | Romaninsky Samuel Darden | VP, General Counsel & CCO | Option exercise(M) | 16K | — | $0 |
| May 20, 2026 | Romaninsky Samuel Darden | VP, General Counsel & CCO | Tax withholding(F) | 7K | $19.53 | $145K |
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 2021-01-04 → 2026-07-21. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).