William P. Donnelly

Sits on 3 boards. Last updated September 27, 2026

Time on boards

Boards served
3
Current seats
3
Board service
10 years
Director since
2023

10 years of board service in total across 3 boards, counting each seat separately. Longest: Ingersoll Rand Inc., 3 years.

3 years ยท Since 2023
Quanterix Corporation Director ยท Executive Chair
3 years ยท Since 2023
2 years ยท Since 2023

Shareholder support

Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Date Company Transaction Shares Price Value
Aug 17, 2026 Quanterix Corporation Option exercise +2,802 โ€” โ€”
Aug 13, 2026 Quanterix Corporation Open-market purchase +72,245 $2.93 $211,678
Aug 12, 2026 Quanterix Corporation Open-market purchase +27,155 $2.75 $74,676
Jul 1, 2026 Quanterix Corporation Grant or award +5,472 $4.34 $23,748
Jun 30, 2026 T. Rowe Price Group Inc. Grant or award +576 โ€” โ€”
Jun 29, 2026 T. Rowe Price Group Inc. Grant or award +142 $114.38 $16,206
May 8, 2026 T. Rowe Price Group Inc. Grant or award +1,899 โ€” โ€”
Apr 1, 2026 Quanterix Corporation Grant or award +6,178 โ€” โ€”
Mar 30, 2026 T. Rowe Price Group Inc. Grant or award +152 $89.03 $13,540
Feb 26, 2026 Ingersoll Rand Inc. Option exercise +3,029 โ€” โ€”
Jan 2, 2026 Quanterix Corporation Grant or award +2,377 โ€” โ€”
Dec 31, 2025 T. Rowe Price Group Inc. Grant or award +621 โ€” โ€”
Dec 30, 2025 T. Rowe Price Group Inc. Grant or award +119 $103.64 $12,288
Oct 1, 2025 Quanterix Corporation Grant or award +5,076 $5.54 $28,121
Sep 29, 2025 T. Rowe Price Group Inc. Grant or award +117 $103.52 $12,139

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