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 |
|---|---|---|---|---|---|---|
| May 13, 2026 | Mangine David J. | VP-INDUSTRIAL SOLUTIONS GROUP | Grant(A) | 2K | — | $0 |
| May 13, 2026 | Jones Gregory Alan | VP of Food and Health Sciences | Grant(A) | 2K | — | $0 |
| May 13, 2026 | Oldenkamp Jeffrey P. | EXECUTIVE VP AND CFO | Grant(A) | 8K | — | $0 |
| May 13, 2026 | Rozeboom Shirley A. | VP HEALTH AND NUTRITION | Grant(A) | 2K | — | $0 |
| May 13, 2026 | Lange Douglas A. | VP - WATER TREATMENT GROUP | Grant(A) | 2K | — | $0 |
| May 13, 2026 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Grant(A) | 3K | — | $0 |
| May 13, 2026 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Grant(A) | 17K | — | $0 |
| Mar 30, 2026 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Tax withholding(F) | 4K | $151.62 | $579K |
| Mar 30, 2026 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Tax withholding(F) | 11K | $151.62 | $1.7M |
| Mar 30, 2026 | Oldenkamp Jeffrey P. | EXECUTIVE VP AND CFO | Tax withholding(F) | 6K | $151.62 | $860K |
| Mar 30, 2026 | Lange Douglas A. | VP - WATER TREATMENT GROUP | Tax withholding(F) | 4K | $151.62 | $584K |
| Mar 30, 2026 | Mangine David J. | VP-INDUSTRIAL SOLUTIONS GROUP | Tax withholding(F) | 3K | $151.62 | $530K |
| Mar 30, 2026 | Rozeboom Shirley A. | VP HEALTH AND NUTRITION | Tax withholding(F) | 4K | $151.62 | $547K |
| Feb 23, 2026 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 1K | — | $0 |
| Feb 23, 2026 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 260 | — | $0 |
| Feb 5, 2026 | Faulconbridge James A | Director | Buy(P) | 2K | $129.95 | $195K |
| Feb 4, 2026 | Faulconbridge James A | Director | Buy(P) | 2K | $129.29 | $194K |
| Dec 9, 2025 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Gift(G) | 1K | $126.34 | $184K |
| Nov 12, 2025 | Erstad Richard G | VP, GENERAL COUNSEL & SEC | Gift(G) | 50 | — | $0 |
| Nov 3, 2025 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Buy(P) | 2K | $126.34 | $201K |
| Sep 4, 2025 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 220 | — | $0 |
| Jul 30, 2025 | Stauber Daniel J | Director | Grant(A) | 628 | — | $0 |
| Jul 30, 2025 | Faulconbridge James A | Director | Grant(A) | 628 | — | $0 |
| Jul 30, 2025 | Thompson James T | Director | Grant(A) | 628 | — | $0 |
| Jul 30, 2025 | Wright Jeffrey L | Director | Grant(A) | 628 | — | $0 |
| Jul 30, 2025 | Tang Yi | Director | Grant(A) | 628 | — | $0 |
| Jul 30, 2025 | Spethmann Jeffrey E | Director | Grant(A) | 628 | — | $0 |
| Jul 30, 2025 | Schumacher Mary J. | Director | Grant(A) | 628 | — | $0 |
| May 14, 2025 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Grant(A) | 22K | — | $0 |
| May 14, 2025 | Oldenkamp Jeffrey P. | EXECUTIVE VP AND CFO | Grant(A) | 16K | — | $0 |
| May 14, 2025 | Erstad Richard G | VP, GENERAL COUNSEL & SEC | Grant(A) | 4K | — | $0 |
| May 14, 2025 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Grant(A) | 5K | — | $0 |
| May 14, 2025 | Rozeboom Shirley A. | VP HEALTH AND NUTRITION | Grant(A) | 4K | — | $0 |
| May 14, 2025 | Lange Douglas A. | VP - WATER TREATMENT GROUP | Grant(A) | 4K | — | $0 |
| May 14, 2025 | Mangine David J. | VP-INDUSTRIAL SOLUTIONS GROUP | Grant(A) | 4K | — | $0 |
| May 14, 2025 | Jones Gregory Alan | VP of Food and Health Sciences | Grant(A) | 3K | — | $0 |
| Mar 31, 2025 | Lange Douglas A. | VP - WATER TREATMENT GROUP | Tax withholding(F) | 3K | $105.92 | $273K |
| Mar 31, 2025 | Mangine David J. | VP - INDUSTRIAL GROUP | Tax withholding(F) | 3K | $105.92 | $273K |
| Mar 31, 2025 | Rozeboom Shirley A. | VP HEALTH AND NUTRITION | Tax withholding(F) | 3K | $105.92 | $334K |
| Mar 31, 2025 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Tax withholding(F) | 3K | $105.92 | $313K |
| Mar 31, 2025 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Tax withholding(F) | 10K | $105.92 | $1.0M |
| Mar 31, 2025 | Oldenkamp Jeffrey P. | EXECUTIVE VP AND CFO | Tax withholding(F) | 4K | $105.92 | $446K |
| Mar 31, 2025 | Erstad Richard G | VP, GENERAL COUNSEL & SEC | Tax withholding(F) | 4K | $105.92 | $379K |
| Feb 5, 2025 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 960 | — | $0 |
| Jan 15, 2025 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 340 | — | $0 |
| Oct 28, 2024 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 300 | — | $0 |
| Aug 13, 2024 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 300 | — | $0 |
| Jul 31, 2024 | Schumacher Mary J. | Director | Grant(A) | 962 | — | $0 |
| Jul 31, 2024 | Thompson James T | Director | Grant(A) | 962 | — | $0 |
| Jul 31, 2024 | Stauber Daniel J | Director | Grant(A) | 962 | — | $0 |
| Jul 31, 2024 | Faulconbridge James A | Director | Grant(A) | 962 | — | $0 |
| Jul 31, 2024 | Spethmann Jeffrey E | Director | Grant(A) | 962 | — | $0 |
| Jul 31, 2024 | Tang Yi | Director | Grant(A) | 962 | — | $0 |
| Jul 31, 2024 | Wright Jeffrey L | Director | Grant(A) | 962 | — | $0 |
| Jun 12, 2024 | Faulconbridge James A | Director | Buy(P) | 2K | $89.90 | $153K |
| Jun 12, 2024 | Faulconbridge James A | Director | Buy(P) | 100 | $90.70 | $9K |
| Jun 11, 2024 | Faulconbridge James A | Director | Buy(P) | 632 | $88.58 | $56K |
| Jun 11, 2024 | Faulconbridge James A | Director | Buy(P) | 1K | $89.27 | $122K |
| Jun 10, 2024 | Faulconbridge James A | Director | Buy(P) | 1K | $85.99 | $104K |
| Jun 10, 2024 | Faulconbridge James A | Director | Buy(P) | 788 | $87.20 | $69K |
| Jun 7, 2024 | Faulconbridge James A | Director | Buy(P) | 754 | $88.04 | $66K |
| Jun 7, 2024 | Faulconbridge James A | Director | Buy(P) | 746 | $87.01 | $65K |
| Jun 6, 2024 | Faulconbridge James A | Director | Buy(P) | 1K | $87.40 | $111K |
| Jun 6, 2024 | Faulconbridge James A | Director | Buy(P) | 530 | $87.95 | $47K |
| Jun 5, 2024 | Faulconbridge James A | Director | Buy(P) | 250 | $86.91 | $22K |
| Jun 5, 2024 | Faulconbridge James A | Director | Buy(P) | 100 | $87.54 | $9K |
| Jun 5, 2024 | Faulconbridge James A | Director | Buy(P) | 250 | $85.84 | $21K |
| Jun 4, 2024 | Faulconbridge James A | Director | Buy(P) | 500 | $87.04 | $44K |
| Jun 4, 2024 | Faulconbridge James A | Director | Buy(P) | 800 | $86.17 | $69K |
| May 15, 2024 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Grant(A) | 22K | — | $0 |
| May 15, 2024 | Oldenkamp Jeffrey P. | EXECUTIVE VP AND CFO | Grant(A) | 12K | — | $0 |
| May 15, 2024 | Erstad Richard G | VP, GENERAL COUNSEL & SEC | Grant(A) | 8K | — | $0 |
| May 15, 2024 | Rozeboom Shirley A. | VP HEALTH AND NUTRITION | Grant(A) | 7K | — | $0 |
| May 15, 2024 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Grant(A) | 8K | — | $0 |
| May 15, 2024 | Lange Douglas A. | VP - WATER TREATMENT GROUP | Grant(A) | 7K | — | $0 |
| May 15, 2024 | Mangine David J. | VP - INDUSTRIAL GROUP | Grant(A) | 7K | — | $0 |
| Apr 1, 2024 | Lange Douglas A. | VP - WATER TREATMENT GROUP | Tax withholding(F) | 2K | $74.62 | $161K |
| Apr 1, 2024 | Oldenkamp Jeffrey P. | EXECUTIVE VP AND CFO | Tax withholding(F) | 7K | $74.62 | $499K |
| Apr 1, 2024 | Rozeboom Shirley A. | VP HEALTH AND NUTRITION | Tax withholding(F) | 3K | $74.62 | $218K |
| Apr 1, 2024 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Tax withholding(F) | 4K | $74.62 | $297K |
| Apr 1, 2024 | Mangine David J. | VP - INDUSTRIAL GROUP | Tax withholding(F) | 2K | $74.62 | $170K |
| Apr 1, 2024 | Erstad Richard G | VP, GENERAL COUNSEL & SEC | Tax withholding(F) | 5K | $74.62 | $343K |
| Apr 1, 2024 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Tax withholding(F) | 10K | $74.62 | $751K |
| Mar 4, 2024 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 2K | — | $0 |
| Dec 26, 2023 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 480 | — | $0 |
| Dec 15, 2023 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Gift(G) | 1K | — | $0 |
| Aug 2, 2023 | Stauber Daniel J | Director | Grant(A) | 2K | — | $0 |
| Aug 2, 2023 | Faulconbridge James A | Director | Grant(A) | 2K | — | $0 |
| Aug 2, 2023 | Schumacher Mary J. | Director | Grant(A) | 2K | — | $0 |
| Aug 2, 2023 | Thompson James T | Director | Grant(A) | 2K | — | $0 |
| Aug 2, 2023 | Wright Jeffrey L | Director | Grant(A) | 2K | — | $0 |
| Aug 2, 2023 | Spethmann Jeffrey E | Director | Grant(A) | 2K | — | $0 |
| Aug 2, 2023 | Tang Yi | Director | Grant(A) | 2K | — | $0 |
| May 17, 2023 | Oldenkamp Jeffrey P. | EXECUTIVE VP AND CFO | Grant(A) | 11K | — | $0 |
| May 17, 2023 | Hawkins Patrick H. | CEO AND PRESIDENT, Director | Grant(A) | 19K | — | $0 |
| May 17, 2023 | Erstad Richard G | VP, GENERAL COUNSEL & SEC | Grant(A) | 7K | — | $0 |
| May 17, 2023 | Grahek Drew M. | VICE PRESIDENT OF OPERATIONS | Grant(A) | 7K | — | $0 |
| May 17, 2023 | Rozeboom Shirley A. | VP HEALTH AND NUTRITION | Grant(A) | 6K | — | $0 |
| May 17, 2023 | Lange Douglas A. | VP - WATER TREATMENT GROUP | Grant(A) | 6K | — | $0 |
| May 17, 2023 | Mangine David J. | VP - INDUSTRIAL GROUP | Grant(A) | 6K | — | $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 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).