DONNELLY WILLIAM P
SEC insider (Form 3/4/5 filer). CIK 0001207928. Director at Quanterix Corp (QTRX) and 2 other issuers. 34 reported Form 4/5 transactions since Sep 2024; latest on Oct 1, 2026. Located in BILLERICA, MA.
Companies DONNELLY WILLIAM P has filed insider reports for
- Quanterix Corp (QTRX): Director
- PRICE T ROWE GROUP INC (TROW)
- Ingersoll Rand Inc. (IR): Director
DONNELLY WILLIAM P
CIK: 0001207928
Transaction Breakdown
Open Market Buys (P)3 (8.8%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)3 (8.8%)
Derivative conversions
Awards (A)27 (79.4%)
Compensation grants
Other (G, F, J, C, D, …)1 (2.9%)
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
AwardDirect7K shares at avg. $3.41$24K - Sep 29, 2026TROW
PRICE T ROWE GROUP INC
AwardDirect164 shares at avg. $104.51$17K - Aug 17, 2026QTRX
Quanterix Corp
ExerciseDirect2.8K shares- - Aug 13, 2026QTRX
Quanterix Corp
PurchaseIndirect72.2K shares at avg. $2.93$212K - Aug 12, 2026QTRX
Quanterix Corp
PurchaseIndirect27.2K shares at avg. $2.75$75K - Jul 1, 2026QTRX
Quanterix Corp
AwardDirect5.5K shares at avg. $4.34$24K - Jun 30, 2026TROW
PRICE T ROWE GROUP INC
AwardDirect576 shares- - Jun 29, 2026TROW
PRICE T ROWE GROUP INC
AwardDirect142 shares at avg. $114.38$16K - May 8, 2026TROW
PRICE T ROWE GROUP INC
AwardDirect1.9K shares- - Apr 1, 2026QTRX
Quanterix Corp
AwardDirect6.2K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 1, 2026 |  QTRX Quanterix Corp | Award | 6,964 | $3.41 | $23,747 | Direct |
| Sep 29, 2026 |  TROW PRICE T ROWE GROUP INC | Award | 164 | $104.51 | $17,139 | Direct |
| Aug 17, 2026 | QTRX Quanterix Corp | Exercise | 2,802 | - | $0 | Direct |
| Aug 13, 2026 | QTRX Quanterix Corp | Purchase | 72,245 | $2.93 | $211,678 | Indirect |
| Aug 12, 2026 | QTRX Quanterix Corp | Purchase | 27,155 | $2.75 | $74,676 | Indirect |
| Jul 1, 2026 | QTRX Quanterix Corp | Award | 5,472 | $4.34 | $23,748 | Direct |
| Jun 30, 2026 | TROW PRICE T ROWE GROUP INC | Award | 576 | - | $0 | Direct |
| Jun 29, 2026 | TROW PRICE T ROWE GROUP INC | Award | 142 | $114.38 | $16,206 | Direct |
| May 8, 2026 | TROW PRICE T ROWE GROUP INC | Award | 1,899 | - | $0 | Direct |
| Apr 1, 2026 | QTRX Quanterix Corp | Award | 6,178 | - | $0 | Direct |
1-10 of 34 transactions