Mark F. Lamps, President of Safety and Infrastructure at Atkore Inc. ($ATKR), sold shares on the open market four times in the last year, totaling about $259 thousand. His most recent sale occurred on February 17, 2026. These sales rank 7,874th among 11,678 individual insiders, below the average of $8.6 million per seller and 6.4 transactions. Lamps made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 27, 2026 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 68 | $0.00 | 36,049.3223 | 33,750,639 | 0.19% | 0.00% |
| Feb. 17, 2026 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 1000 | $65.78 | 35,981.5679 | 33,750,639 | 2.70% | 0.00% |
| Dec. 17, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 68 | $0.00 | 36,981.5679 | 33,665,258 | 0.19% | 0.00% |
| Nov. 17, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 8043 | $0.00 | 37,966.1260 | 33,665,258 | 26.88% | 0.02% |
| Nov. 18, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | F | Common Stock | 1053 | $65.10 | 36,913.1260 | 33,665,258 | 2.77% | 0.00% |
| Nov. 17, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 1000 | $64.75 | 29,923.1260 | 33,665,258 | 3.23% | 0.00% |
| Nov. 13, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | F | Common Stock | 604 | $64.83 | 30,923.1260 | 33,665,258 | 1.92% | 0.00% |
| Nov. 11, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | F | Common Stock | 397 | $65.11 | 31,527.1260 | 33,665,258 | 1.24% | 0.00% |
| Aug. 29, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 51 | $0.00 | 31,924.1260 | 33,655,743 | 0.16% | 0.00% |
| Aug. 15, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 1000 | $59.37 | 31,872.8353 | 33,655,743 | 3.04% | 0.00% |
| May 28, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 45 | $0.00 | 32,872.8353 | 33,650,000 | 0.14% | 0.00% |
| May 9, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 1000 | $69.16 | 32,828.2756 | 33,650,000 | 2.96% | 0.00% |
| Feb. 28, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 47 | $0.00 | 33,828.2756 | 34,398,000 | 0.14% | 0.00% |
| Dec. 16, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 32 | $0.00 | 34,281.6903 | 34,859,033 | 0.09% | 0.00% |
| Feb. 10, 2025 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 500 | $65.00 | 33,760.4265 | 34,398,000 | 1.46% | 0.00% |
| Dec. 16, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 11 | $0.00 | 34,260.4265 | 34,859,033 | 0.03% | 0.00% |
| Nov. 18, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 5914 | $0.00 | 34,249.6147 | 34,859,033 | 20.87% | 0.02% |
| Nov. 16, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | F | Common Stock | 291 | $88.97 | 26,351.8504 | 34,859,033 | 1.09% | 0.00% |
| Nov. 16, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | F | Common Stock | 2181 | $88.97 | 28,335.6147 | 34,859,033 | 7.15% | 0.01% |
| Nov. 16, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 4165 | $0.00 | 30,516.6147 | 34,859,033 | 15.80% | 0.01% |
| Nov. 13, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | F | Common Stock | 593 | $92.48 | 26,642.8504 | 34,859,033 | 2.18% | 0.00% |
| March 15, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 11 | $0.00 | 28,096.5636 | 36,905,000 | 0.04% | 0.00% |
| Nov. 11, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | F | Common Stock | 390 | $95.73 | 27,235.8504 | 34,859,033 | 1.41% | 0.00% |
| Nov. 11, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 500 | $96.55 | 27,625.8504 | 34,859,033 | 1.78% | 0.00% |
| Aug. 30, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 18 | $0.00 | 28,125.8504 | 35,865,000 | 0.06% | 0.00% |
| May 31, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | A | Common Stock | 11 | $0.00 | 28,107.7276 | 36,634,000 | 0.04% | 0.00% |
| Aug. 12, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 500 | $95.47 | 28,086.0000 | 35,865,000 | 1.75% | 0.00% |
| May 14, 2024 | Atkore Inc. | $ATKR | Lamps Mark F. | Pres. Safety & Infrastructure | S | Common Stock | 500 | $157.67 | 28,586.0000 | 36,634,000 | 1.72% | 0.00% |