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 25, 2026 | Lyon Samuel | President of Union Electric | Sell(S) | 10K | $9.82 | $93K |
| Jun 18, 2026 | Lyon Samuel | President of Union Electric | Sell(S) | 547 | $11.30 | $6K |
| May 19, 2026 | McBrayer Brett | Chief Executive Officer, Director | Buy(P) | 3K | $9.03 | $30K |
| May 15, 2026 | German Michael I | Director | Grant(A) | 7K | — | $0 |
| May 15, 2026 | Paul Laurence E | Director | Grant(A) | 7K | — | $0 |
| May 15, 2026 | McNair Darrell L | Director | Grant(A) | 7K | — | $0 |
| May 15, 2026 | Lieberman William K | Director | Grant(A) | 7K | — | $0 |
| May 15, 2026 | DeMichiei Robert | Director | Grant(A) | 7K | — | $0 |
| May 15, 2026 | Fessenden Elizabeth Anne | Director | Grant(A) | 7K | — | $0 |
| May 15, 2026 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 9K | $10.85 | $102K |
| May 15, 2026 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 9K | $10.85 | $93K |
| May 15, 2026 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 8K | $10.85 | $84K |
| May 15, 2026 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 47K | $10.85 | $506K |
| May 15, 2026 | McBrayer Brett | Chief Executive Officer, Director | Grant(A) | 41K | — | $0 |
| May 15, 2026 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 3K | $10.85 | $33K |
| May 15, 2026 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 3K | $10.85 | $34K |
| May 15, 2026 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 4K | $10.85 | $38K |
| May 15, 2026 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 18K | $10.85 | $197K |
| May 15, 2026 | Lyon Samuel | President of Union Electric | Grant(A) | 15K | — | $0 |
| May 15, 2026 | Anderson David George | VP, CFO & Treasurer, Pres. ALS | Tax withholding(F) | 1K | $10.85 | $15K |
| May 15, 2026 | Anderson David George | VP, CFO & Treasurer, Pres. ALS | Tax withholding(F) | 2K | $10.85 | $24K |
| May 15, 2026 | Anderson David George | VP, CFO & Treasurer, Pres. ALS | Tax withholding(F) | 2K | $10.85 | $27K |
| May 15, 2026 | Anderson David George | VP, CFO & Treasurer, Pres. ALS | Tax withholding(F) | 8K | $10.85 | $89K |
| May 15, 2026 | Anderson David George | VP, CFO & Treasurer, Pres. ALS | Grant(A) | 11K | — | $0 |
| Mar 19, 2026 | McBrayer Brett | Chief Executive Officer, Director | Buy(P) | 8K | $6.67 | $50K |
| Mar 4, 2026 | McBrayer Brett | Chief Executive Officer, Director | Grant(A) | 130K | — | $0 |
| Mar 4, 2026 | Lyon Samuel | President of Union Electric | Grant(A) | 42K | — | $0 |
| Mar 4, 2026 | Anderson David George | VP, CFO & Treasurer, Pres. ALS | Grant(A) | 20K | — | $0 |
| Dec 1, 2025 | McBrayer Brett | Chief Executive Officer, Director | Buy(P) | 19K | $2.58 | $49K |
| Nov 19, 2025 | McNair Darrell L | Director | Buy(P) | 3K | $2.52 | $8K |
| Nov 17, 2025 | German Michael I | Director | Buy(P) | 40K | $2.65 | $106K |
| Nov 17, 2025 | McNair Darrell L | Director | Buy(P) | 10K | $2.68 | $27K |
| Nov 17, 2025 | Louis Berkman Investment CO | 10% Owner | Buy(P) | 93K | $2.67 | $248K |
| May 15, 2025 | Abel James J | Director | Grant(A) | 13K | — | $0 |
| May 15, 2025 | Fessenden Elizabeth Anne | Director | Grant(A) | 13K | — | $0 |
| May 15, 2025 | DeMichiei Robert | Director | Grant(A) | 13K | — | $0 |
| May 15, 2025 | German Michael I | Director | Grant(A) | 13K | — | $0 |
| May 15, 2025 | Lieberman William K | Director | Grant(A) | 13K | — | $0 |
| May 15, 2025 | McNair Darrell L | Director | Grant(A) | 13K | — | $0 |
| May 15, 2025 | Paul Laurence E | Director | Grant(A) | 13K | — | $0 |
| May 15, 2025 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 10K | $2.26 | $24K |
| May 15, 2025 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 12K | $2.26 | $26K |
| May 15, 2025 | McBrayer Brett | Chief Executive Officer, Director | Grant(A) | 78K | — | $0 |
| May 15, 2025 | McBrayer Brett | Chief Executive Officer, Director | Grant(A) | 81K | — | $0 |
| May 15, 2025 | McAuley Michael G | Senior V.P., CFO & Treasurer | Tax withholding(F) | 2K | $2.26 | $5K |
| May 15, 2025 | McAuley Michael G | Senior V.P., CFO & Treasurer | Tax withholding(F) | 2K | $2.26 | $5K |
| May 15, 2025 | McAuley Michael G | Senior V.P., CFO & Treasurer | Grant(A) | 27K | — | $0 |
| May 15, 2025 | McAuley Michael G | Senior V.P., CFO & Treasurer | Grant(A) | 28K | — | $0 |
| May 15, 2025 | Lyon Samuel | President of Union Electric | Grant(A) | 25K | — | $0 |
| May 15, 2025 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 3K | $2.26 | $8K |
| May 15, 2025 | Lyon Samuel | President of Union Electric | Grant(A) | 25K | — | $0 |
| May 15, 2025 | Anderson David George | President, Air & Liquid Systms | Grant(A) | 18K | — | $0 |
| May 15, 2025 | Anderson David George | President, Air & Liquid Systms | Tax withholding(F) | 942 | $2.26 | $2K |
| May 15, 2025 | Anderson David George | President, Air & Liquid Systms | Tax withholding(F) | 1K | $2.26 | $3K |
| May 15, 2025 | Anderson David George | President, Air & Liquid Systms | Grant(A) | 19K | — | $0 |
| May 5, 2025 | Anderson David George | President, Air & Liquid Systms | Tax withholding(F) | 750 | $2.23 | $2K |
| May 5, 2025 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 3K | $2.23 | $7K |
| May 5, 2025 | McAuley Michael G | Senior V.P., CFO & Treasurer | Tax withholding(F) | 2K | $2.23 | $5K |
| May 5, 2025 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 10K | $2.23 | $22K |
| Mar 25, 2025 | Fessenden Elizabeth Anne | Director | Buy(P) | 1K | $2.16 | $3K |
| Mar 24, 2025 | Fessenden Elizabeth Anne | Director | Buy(P) | 1K | $2.22 | $3K |
| Mar 24, 2025 | Fessenden Elizabeth Anne | Director | Buy(P) | 720 | $2.26 | $2K |
| Mar 24, 2025 | Fessenden Elizabeth Anne | Director | Buy(P) | 300 | $2.27 | $681 |
| May 15, 2024 | Anderson David George | President, Air & Liquid Systms | Tax withholding(F) | 940 | $1.61 | $2K |
| May 15, 2024 | Anderson David George | President, Air & Liquid Systms | Grant(A) | 16K | — | $0 |
| May 15, 2024 | Lyon Samuel | President of Union Electric | Grant(A) | 22K | — | $0 |
| May 15, 2024 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 3K | $1.61 | $4K |
| May 15, 2024 | McAuley Michael G | Senior V.P., CFO & Treasurer | Grant(A) | 24K | — | $0 |
| May 15, 2024 | McAuley Michael G | Senior V.P., CFO & Treasurer | Tax withholding(F) | 2K | $1.61 | $3K |
| May 15, 2024 | McBrayer Brett | Chief Executive Officer, Director | Grant(A) | 71K | — | $0 |
| May 15, 2024 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 10K | $1.61 | $17K |
| May 15, 2024 | Abel James J | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | DeMichiei Robert | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | Fessenden Elizabeth Anne | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | Paul Laurence E | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | Paul Stephen E | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | Lieberman William K | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | German Michael I | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | McNair Darrell L | Director | Grant(A) | 13K | — | $0 |
| May 15, 2024 | DiSanto Frederick D. | Director | Grant(A) | 13K | — | $0 |
| May 13, 2024 | Anderson David George | President, Air & Liquid Systms | Tax withholding(F) | 316 | $1.87 | $591 |
| May 13, 2024 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 2K | $1.87 | $4K |
| May 13, 2024 | McAuley Michael G | Senior V.P., CFO & Treasurer | Tax withholding(F) | 2K | $1.87 | $3K |
| May 13, 2024 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 9K | $1.87 | $16K |
| May 6, 2024 | Anderson David George | President, Air & Liquid Systms | Tax withholding(F) | 887 | $2.04 | $2K |
| May 6, 2024 | Lyon Samuel | President of Union Electric | Tax withholding(F) | 3K | $2.04 | $6K |
| May 6, 2024 | McAuley Michael G | Senior V.P., CFO & Treasurer | Tax withholding(F) | 2K | $2.04 | $4K |
| May 6, 2024 | McBrayer Brett | Chief Executive Officer, Director | Tax withholding(F) | 10K | $2.04 | $20K |
| Sep 13, 2023 | McNair Darrell L | Director | Buy(P) | 3K | $3.12 | $9K |
| Jun 29, 2023 | DiSanto Frederick D. | Director | Buy(P) | 7K | $2.99 | $22K |
| Jun 28, 2023 | DiSanto Frederick D. | Director | Buy(P) | 918 | $2.85 | $3K |
| Jun 23, 2023 | DiSanto Frederick D. | Director | Buy(P) | 2K | $2.94 | $6K |
| Jun 22, 2023 | DiSanto Frederick D. | Director | Buy(P) | 5K | $2.94 | $15K |
| May 19, 2023 | DiSanto Frederick D. | Director | Buy(P) | 5K | $3.07 | $15K |
| May 18, 2023 | Abel James J | Director | Grant(A) | 13K | — | $0 |
| May 18, 2023 | DeMichiei Robert | Director | Grant(A) | 13K | — | $0 |
| May 18, 2023 | DiSanto Frederick D. | Director | Grant(A) | 13K | — | $0 |
| May 18, 2023 | Fessenden Elizabeth Anne | Director | Grant(A) | 13K | — | $0 |
| May 18, 2023 | German Michael I | Director | Grant(A) | 22K | — | $0 |
| May 18, 2023 | Lieberman William K | Director | Grant(A) | 13K | — | $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 → 2026-07-11. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).