William P. Donnelly bought Quanterix Corp ($QTRX) shares on the open market once in the last year, for a total of about $506,000. His most recent purchase was on June 6, 2025. This ranks him 810th among nearly 5,000 insiders by purchase value, below the average of $1.5 million across 3.3 transactions. He made no open market sales in the period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 30, 2026 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 152 | $89.03 | 10,567.0600 | 220,300,000 | 1.46% | 0.00% |
| Feb. 26, 2026 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Restricted Stock Units | 3029 | $0.00 | 0.0000 | 431,800,000 | 100.00% | 0.00% |
| Feb. 26, 2026 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Common Stock | 3029 | $0.00 | 56,831.0000 | 431,800,000 | 5.63% | 0.00% |
| Feb. 23, 2026 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | A | Restricted Stock Units | 2927 | $0.00 | 2,927.0000 | 431,800,000 | 9999.99% | 0.00% |
| Jan. 2, 2026 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Executive Chair | A | Common Stock | 2377 | $0.00 | 150,751.0000 | 46,710,797 | 1.60% | 0.01% |
| Dec. 31, 2025 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 621 | $0.00 | 10,414.9823 | 220,900,000 | 6.34% | 0.00% |
| Dec. 30, 2025 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 119 | $103.64 | 9,793.9823 | 220,900,000 | 1.23% | 0.00% |
| Nov. 20, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Executive Chair | A | Stock Options (Right to buy) | 70091 | $0.00 | 70,091.0000 | 46,710,797 | 9999.99% | 0.15% |
| Oct. 1, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 5076 | $5.54 | 148,374.0000 | 38,776,208 | 3.54% | 0.01% |
| Sept. 29, 2025 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 117 | $103.52 | 9,675.4201 | 223,300,000 | 1.23% | 0.00% |
| July 1, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 4204 | $6.69 | 143,298.0000 | 38,776,208 | 3.02% | 0.01% |
| June 30, 2025 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 670 | $0.00 | 9,558.1591 | 223,300,000 | 7.54% | 0.00% |
| June 27, 2025 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 116 | $96.10 | 8,888.1591 | 223,300,000 | 1.32% | 0.00% |
| June 6, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | P | Common Stock | 93113 | $5.44 | 139,094.0000 | 38,776,208 | 202.50% | 0.24% |
| May 9, 2025 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 2157 | $0.00 | 8,772.2306 | 223,300,000 | 32.61% | 0.00% |
| April 1, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 2681 | $6.67 | 45,981.0000 | 38,776,208 | 6.19% | 0.01% |
| March 28, 2025 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 90 | $91.57 | 6,615.2306 | 223,300,000 | 1.39% | 0.00% |
| Feb. 26, 2025 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | A | Restricted Stock Units | 3029 | $0.00 | 3,029.0000 | 430,700,000 | 9999.99% | 0.00% |
| Feb. 27, 2025 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Restricted Stock Units | 2793 | $0.00 | 0.0000 | 430,700,000 | 100.00% | 0.00% |
| Feb. 27, 2025 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Common Stock | 2793 | $0.00 | 53,802.0000 | 430,700,000 | 5.48% | 0.00% |
| Jan. 2, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Stock Options (Right to buy) | 15821 | $0.00 | 15,821.0000 | 0 | 9999.99% | 0.00% |
| Jan. 2, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 7435 | $0.00 | 42,018.0000 | 0 | 21.50% | 0.00% |
| Jan. 2, 2025 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 1282 | $10.76 | 43,300.0000 | 0 | 3.05% | 0.00% |
| Dec. 27, 2024 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 63 | $115.67 | 5,983.7379 | 223,500,000 | 1.07% | 0.00% |
| Dec. 30, 2024 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 541 | $0.00 | 6,524.7379 | 223,500,000 | 9.04% | 0.00% |
| Dec. 4, 2024 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | G | Common Stock | 14875 | $0.00 | 51,009.0000 | 430,600,000 | 22.58% | 0.00% |
| Oct. 1, 2024 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 1000 | $12.50 | 34,583.0000 | 0 | 2.98% | 0.00% |
| Sept. 27, 2024 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 66 | $109.51 | 5,920.2717 | 224,800,000 | 1.13% | 0.00% |
| July 1, 2024 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 985 | $12.68 | 33,583.0000 | 0 | 3.02% | 0.00% |
| June 27, 2024 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 56 | $115.43 | 5,293.9860 | 224,800,000 | 1.07% | 0.00% |
| June 28, 2024 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 560 | $0.00 | 5,853.9860 | 224,800,000 | 10.58% | 0.00% |
| May 8, 2024 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 1794 | $0.00 | 5,237.7201 | 224,800,000 | 52.09% | 0.00% |
| April 1, 2024 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 525 | $23.78 | 32,598.0000 | 0 | 1.64% | 0.00% |
| March 28, 2024 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 35 | $121.92 | 3,443.7201 | 224,800,000 | 1.02% | 0.00% |
| Feb. 27, 2024 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | A | Restricted Stock Units | 2793 | $0.00 | 2,793.0000 | 428,600,000 | 9999.99% | 0.00% |
| Feb. 23, 2024 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Common Stock | 4059 | $0.00 | 65,884.0000 | 428,600,000 | 6.57% | 0.00% |
| Feb. 23, 2024 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Restricted Stock Units | 4059 | $0.00 | 0.0000 | 428,600,000 | 100.00% | 0.00% |
| Jan. 2, 2024 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Stock Option (Right to Buy) | 6412 | $0.00 | 6,412.0000 | 0 | 9999.99% | 0.00% |
| Jan. 2, 2024 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 460 | $27.15 | 32,073.0000 | 0 | 1.46% | 0.00% |
| Jan. 2, 2024 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 2947 | $0.00 | 31,613.0000 | 0 | 10.28% | 0.00% |
| Dec. 29, 2023 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 191 | $107.69 | 3,409.0480 | 227,100,000 | 5.94% | 0.00% |
| Dec. 29, 2023 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 36 | $107.69 | 3,218.0480 | 227,100,000 | 1.13% | 0.00% |
| Nov. 2, 2023 | PRICE T ROWE GROUP INC | $TROW | DONNELLY WILLIAM P | Not found | A | Common Stock | 3182 | $0.00 | 3,182.0000 | 227,100,000 | 9999.99% | 0.00% |
| Oct. 2, 2023 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 228 | $26.71 | 28,666.0000 | 0 | 0.80% | 0.00% |
| Sept. 8, 2023 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | P | Common Stock | 20200 | $24.85 | 28,438.0000 | 0 | 245.21% | 0.00% |
| Aug. 17, 2023 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Stock Option (right to buy) | 12356 | $0.00 | 12,356.0000 | 0 | 9999.99% | 0.00% |
| Aug. 17, 2023 | Quanterix Corp | $QTRX | DONNELLY WILLIAM P | Not found | A | Common Stock | 8238 | $0.00 | 8,238.0000 | 0 | 9999.99% | 0.00% |
| Feb. 23, 2023 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | A | Restricted Stock Units | 4059 | $0.00 | 4,059.0000 | 426,300,000 | 9999.99% | 0.00% |
| Feb. 22, 2023 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Common Stock | 4426 | $0.00 | 61,825.0000 | 426,300,000 | 7.71% | 0.00% |
| Feb. 22, 2023 | Ingersoll Rand Inc. | $IR | DONNELLY WILLIAM P | Not found | M | Restricted Stock Units | 4426 | $0.00 | 0.0000 | 426,300,000 | 100.00% | 0.00% |