William P. Donnelly
CIK: 0001207928
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (34 total)
- Oct 1, 2026QTRX
Quanterix Corp
Award(A)Direct7K shares at avg. $3.41$24K - Sep 29, 2026TROW
PRICE T ROWE GROUP INC
Award(A)Direct164 shares at avg. $104.51$17K - Aug 17, 2026QTRX
Quanterix Corp
Exercise(M)Direct2.8K shares- - Aug 13, 2026QTRX
Quanterix Corp
Purchase(P)Indirect72.2K shares at avg. $2.93$212K - Aug 12, 2026QTRX
Quanterix Corp
Purchase(P)Indirect27.2K shares at avg. $2.75$75K - Jul 1, 2026QTRX
Quanterix Corp
Award(A)Direct5.5K shares at avg. $4.34$24K - Jun 30, 2026TROW
PRICE T ROWE GROUP INC
Award(A)Direct576 shares- - Jun 29, 2026TROW
PRICE T ROWE GROUP INC
Award(A)Direct142 shares at avg. $114.38$16K - May 8, 2026TROW
PRICE T ROWE GROUP INC
Award(A)Direct1.9K shares- - Apr 1, 2026QTRX
Quanterix Corp
Award(A)Direct6.2K shares- - Feb 26, 2026IR
Ingersoll Rand Inc.
Exercise(M)Direct3K shares- - Feb 23, 2026IR
Ingersoll Rand Inc.
Award(A)DirectRestricted Stock Units
2.9K shares- - Jan 2, 2026QTRX
Quanterix Corp
Award(A)Direct2.4K shares- - Dec 31, 2025TROW
PRICE T ROWE GROUP INC
Award(A)Direct621 shares- - Dec 30, 2025TROW
PRICE T ROWE GROUP INC
Award(A)Direct119 shares at avg. $103.64$12K - Nov 20, 2025QTRX
Quanterix Corp
Award(A)DirectStock Options (Right to buy)
70.1K shares- - Oct 1, 2025QTRX
Quanterix Corp
Award(A)Direct5.1K shares at avg. $5.54$28K - Sep 29, 2025TROW
PRICE T ROWE GROUP INC
Award(A)Direct117 shares at avg. $103.52$12K - Jul 1, 2025QTRX
Quanterix Corp
Award(A)Direct4.2K shares at avg. $6.69$28K - Jun 30, 2025TROW
PRICE T ROWE GROUP INC
Award(A)Direct670 shares- - Jun 27, 2025TROW
PRICE T ROWE GROUP INC
Award(A)Direct116 shares at avg. $96.10$11K - Jun 6, 2025QTRX
Quanterix Corp
Purchase(P)Direct93.1K shares at avg. $5.44$506K - May 9, 2025TROW
PRICE T ROWE GROUP INC
Award(A)Direct2.2K shares- - Apr 1, 2025QTRX
Quanterix Corp
Award(A)Direct2.7K shares at avg. $6.67$18K - Mar 28, 2025TROW
PRICE T ROWE GROUP INC
Award(A)Direct90 shares at avg. $91.57$8K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 1, 2026 |  QTRX Quanterix Corp | Award(A) | 6,964 | $3.41 | $23,747 | Direct |
| Sep 29, 2026 |  TROW PRICE T ROWE GROUP INC | Award(A) | 164 | $104.51 | $17,139 | Direct |
| Aug 17, 2026 | QTRX Quanterix Corp | Exercise(M) | 2,802 | - | $0 | Direct |
| Aug 13, 2026 | QTRX Quanterix Corp | Purchase(P) | 72,245 | $2.93 | $211,678 | Indirect |
| Aug 12, 2026 | QTRX Quanterix Corp | Purchase(P) | 27,155 | $2.75 | $74,676 | Indirect |
| Jul 1, 2026 | QTRX Quanterix Corp | Award(A) | 5,472 | $4.34 | $23,748 | Direct |
| Jun 30, 2026 | TROW PRICE T ROWE GROUP INC | Award(A) | 576 | - | $0 | Direct |
| Jun 29, 2026 | TROW PRICE T ROWE GROUP INC | Award(A) | 142 | $114.38 | $16,206 | Direct |
| May 8, 2026 | TROW PRICE T ROWE GROUP INC | Award(A) | 1,899 | - | $0 | Direct |
| Apr 1, 2026 | QTRX Quanterix Corp | Award(A) | 6,178 | - | $0 | Direct |
| Feb 26, 2026 |  IR Ingersoll Rand Inc. | Exercise(M) | 3,029 | - | $0 | Direct |
| Feb 23, 2026 | IR Ingersoll Rand Inc. | Award(A) Restricted Stock Units | 2,927 | - | - | Direct |
| Jan 2, 2026 | QTRX Quanterix Corp | Award(A) | 2,377 | - | $0 | Direct |
| Dec 31, 2025 | TROW PRICE T ROWE GROUP INC | Award(A) | 621 | - | $0 | Direct |
| Dec 30, 2025 | TROW PRICE T ROWE GROUP INC | Award(A) | 119 | $103.64 | $12,288 | Direct |
| Nov 20, 2025 | QTRX Quanterix Corp | Award(A) Stock Options (Right to buy) | 70,091 | - | - | Direct |
| Oct 1, 2025 | QTRX Quanterix Corp | Award(A) | 5,076 | $5.54 | $28,121 | Direct |
| Sep 29, 2025 | TROW PRICE T ROWE GROUP INC | Award(A) | 117 | $103.52 | $12,139 | Direct |
| Jul 1, 2025 | QTRX Quanterix Corp | Award(A) | 4,204 | $6.69 | $28,125 | Direct |
| Jun 30, 2025 | TROW PRICE T ROWE GROUP INC | Award(A) | 670 | - | - | Direct |
| Jun 27, 2025 | TROW PRICE T ROWE GROUP INC | Award(A) | 116 | $96.10 | $11,141 | Direct |
| Jun 6, 2025 | QTRX Quanterix Corp | Purchase(P) | 93,113 | $5.44 | $506,348 | Direct |
| May 9, 2025 | TROW PRICE T ROWE GROUP INC | Award(A) | 2,157 | - | - | Direct |
| Apr 1, 2025 | QTRX Quanterix Corp | Award(A) | 2,681 | $6.67 | $17,869 | Direct |
| Mar 28, 2025 | TROW PRICE T ROWE GROUP INC | Award(A) | 90 | $91.57 | $8,286 | Direct |
1-25 of 34 transactions
About DONNELLY WILLIAM P
DONNELLY WILLIAM P (SEC CIK 0001207928) files insider reports with the SEC as Director of Quanterix Corp (QTRX), PRICE T ROWE GROUP INC (TROW) and Director of Ingersoll Rand Inc. (IR).
Signal8 holds 27 ownership filings by DONNELLY WILLIAM P, all Form 4s, filed between Sep 30, 2024 and Oct 2, 2026. Those filings report 34 transactions, from Sep 27, 2024 to Oct 1, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on DONNELLY WILLIAM P's filings is in BILLERICA, MA.
Recent filings by DONNELLY WILLIAM P
- Oct 1, 2026: Grant or award of QTRX shares (Form 4, code A).
- Sep 29, 2026: Grant or award of TROW shares (Form 4, code A).
- Aug 17, 2026: Option exercise of QTRX shares (Form 4, code M).
- Aug 13, 2026: Open-market purchase of QTRX shares (Form 4, code P).
- Aug 12, 2026: Open-market purchase of QTRX shares (Form 4, code P).
Other insiders filing for Quanterix Corp (QTRX)
- Miller Michael Francis, Chief Technology Officer
- Magovcevic-Liebisch Ivana, Director
- Mendel Scott, Director
- Gute James Edward Jr., Chief Commercial Officer
- Elliott Jeffrey Thomas, Director
- Faessler Jason F., Chief Financial Officer