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Quanterix Corporation 2025-2026 Proxy Voting Records

Compiled from SEC Form N-PX filings and Quanterix Corporation’s Form 8-K, filed 2025-10-02 (Item 5.07 on EDGAR). Page generated 04 October 2026.

  • 14Reported items
  • 174Asset managers
  • 2,021Fund votes
  • 2025-09-29Main meeting date

Proxy season: 2023-2024 2025-2026

Explore Quanterix Corporation in the interactive database Compare manager voting policies

Official 2025-2026 meeting results reported by Quanterix Corporation

These tallies are Quanterix Corporation’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K, filed 2025-10-02 (Item 5.07, “Submission of Matters to a Vote of Security Holders”). They cover every share voted at the meeting, not just the funds that file Form N-PX. Quanterix Corporation reported 2 meetings in this season; each is tabulated separately below, with its own filing.

Quanterix Corporation — official shareholder meeting results, meeting held 2025-09-29 (Form 8-K, filed 2025-10-02)
Ballot itemForAgainst AbstainWithheldBroker non-votesOutcome
Elect Director: Myla Lai-Goldman, M.D. 35,731,623---- 163,7724,293,146 Majority: yes
Elect Director: Masoud Toloue, Ph.D. 32,552,678---- 3,342,7174,293,146 Majority: yes
Elect Director: David R. Walt, Ph.D. 29,705,101---- 6,190,2944,293,146 Majority: yes
Proposal 2: Advisory Vote to Approve the Compensation of the Company's Named Executive Officers: 30,261,4435,546,65187,298 --4,293,149 Majority: yes
Proposal 3: Ratification of KPMG, LLP as the Company's Independent Registered Public Accounting Firm: 40,087,90882,32018,313 --0 Majority: yes
Proposal 4: Vote to Approve an Amendment to the Charter to Declassify the Board: 35,685,740159,25050,404 --4,293,147 Majority: yes
Proposal 5: Vote to Approve an Amendment to the Charter to Eliminate the Supermajority Stockholder Vote Required to Amend Certain Charter Provisions: 35,554,910253,40787,077 --4,293,147 Majority: yes
Proposal 6: Vote to Approve an Amendment to the Charter to Eliminate the Supermajority Stockholder Vote Required to Amend the Bylaws: 35,558,103256,74680,545 --4,293,147 Majority: yes

Source: Quanterix Corporation, Form 8-K, filed with the SEC on 2025-10-02 — read the filing on EDGAR.

Quanterix Corporation — official shareholder meeting results, meeting held 2026-06-09 (Form 8-K, filed 2026-06-10)
Ballot itemForAgainst AbstainWithheldBroker non-votesOutcome
Elect Director: William P. Donnelly 30,927,792--11,634 2,757,6535,180,238 Majority: yes
Elect Director: Ivana Magovčević-Liebisch, Ph.D., J.D. 30,314,520--6,835 3,375,7245,180,238 Majority: yes
Proposal 2: Advisory Vote to Approve the Compensation of the Company's Named Executive Officers: 27,679,6363,881,5162,135,927 --5,180,238 Majority: yes
Proposal 3: Ratification of KPMG, LLP as the Company's Independent Registered Public Accounting Firm: 38,728,204137,59511,518 --0 Majority: yes
Proposal 4: Approval of an Amendment and Restatement of the 2017 Plan: 9,677,23224,004,12415,723 --5,180,238 Majority: no

Source: Quanterix Corporation, Form 8-K, filed with the SEC on 2026-06-10 — read the filing on EDGAR.

How asset managers voted at the Quanterix Corporation 2025-2026 meetings

Each item below shows how the 174 asset managers that disclosed a Quanterix Corporation vote in their SEC Form N-PX filings actually voted. Share totals are the shares those managers' funds voted, summed across every fund they report. These are reported items, not a count of the ballot: fund filings describe one ballot item in different words. Two descriptions are shown as one item only on evidence — the same text (or one cut short of the other), the same director nominee, or a match to the same row of Quanterix Corporation’s own Form 8-K tally — never because they merely read alike. A description that could not be joined that way is listed on its own, so one ballot item can appear more than once.

1. Approval, on an advisory basis, of the compensation of the Company's named executive officers.

SECTION 14A SAY-ON-PAY VOTESMajority of the votes cast: yes

Meeting held 2025-09-29.

Combines 6 wordings of this item as funds reported it.

85% Majority: yes · of votes cast

FOR 85%AGAINST 15%
FOR: 30,261,443AGAINST: 5,546,651

Quanterix Corporation’s own tally for this item (“Proposal 2: Advisory Vote to Approve the Compensation of the Company's Named Executive Officers:”): 30,261,443 for, 5,546,651 against, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 78% for, 14% against (92% of the company cast a for/against vote).

The 149 asset managers below cast 98% of the shares they voted on this item FOR (25,048,515 for, 592,294 against).

FOR 98%
FOR: 25,048,515 (97.7%)AGAINST: 592,294 (2.3%)
Largest asset managers voting on “Approval, on an advisory basis, of the compensation of the Company's named executive officers.” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Portolan Capital Management, LLC3,530,6220 00For
AMERIPRISE FINANCIAL INC3,521,1830 00For
Fidelity2,870,3590 00For
BlackRock2,604,9510 00For
Vanguard2,493,6900 00For
Invenomic Capital Management LP1,063,1180 00For
GEODE CAPITAL MANAGEMENT, LLC969,3210 00For
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC855,7900 00For
Columbia Threadneedle730,0580 00For
EASTERLY INVESTMENT PARTNERS LLC671,2760 00For
Charles Schwab662,8960 00For
MARSHALL WACE, LLP648,2760 00For
ENVESTNET ASSET MANAGEMENT INC483,3490 00For
Aberdeen463,4670 00For
State Street415,7071,862 00For
WILLIAM BLAIR FUNDS386,5600 00For
SCS Capital Management LLC354,3390 00For
Tikvah Management LLC288,0820 00For
STATE OF WISCONSIN INVESTMENT BOARD249,4590 00For
Dimensional0241,502 00Against
Northern Trust234,6932,645 00For
American Century0179,100 00Against
RBC Capital Markets, LLC176,5000 00For
Private Wealth Partners, LLC142,5390 00For
Goldman Sachs122,2690 00For

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

2. To approve, on an advisory basis, the compensation of the Company's named executive officers

SECTION 14A SAY-ON-PAY VOTESMajority of the votes cast: yes

Meeting held 2026-06-09.

Combines 4 wordings of this item as funds reported it.

88% Majority: yes · of votes cast

FOR 88%12%
FOR: 27,679,636AGAINST: 3,881,516

Quanterix Corporation’s own tally for this item (“Proposal 2: Advisory Vote to Approve the Compensation of the Company's Named Executive Officers:”): 27,679,636 for, 3,881,516 against, per its Form 8-K filed 2026-06-10 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 71% for, 10% against (81% of the company cast a for/against vote).

The 145 asset managers below cast 98% of the shares they voted on this item FOR (27,543,739 for, 497,754 against).

FOR 91%
FOR: 27,543,739 (91.4%)AGAINST: 497,754 (1.7%)ABSTAIN: 2,092,153 (6.9%)
Largest asset managers voting on “To approve, on an advisory basis, the compensation of the Company's named executive officers” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
BlackRock2,921,4800 00For
Portolan Capital Management, LLC2,892,5220 00For
Fidelity2,696,9400 00For
Vanguard2,633,55712 70For
Blue Water Life Science Advisors, LP00 2,092,1460Abstain
Invenomic Capital Management LP1,848,7470 00For
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC1,437,7230 00For
First Eagle Investment Management, LLC1,411,0870 00For
FIRST EAGLE FUNDS1,227,8670 00For
AMERIPRISE FINANCIAL INC1,116,8780 00For
GEODE CAPITAL MANAGEMENT, LLC1,005,2350 00For
Columbia Threadneedle982,1280 00For
WILLIAM BLAIR FUNDS719,7760 00For
Charles Schwab692,6710 00For
State Street688,3260 00For
LEVIN CAPITAL STRATEGIES, L.P.638,6830 00For
ENVESTNET ASSET MANAGEMENT INC621,6390 00For
Topline Capital Management, LLC557,2880 00For
MARSHALL WACE, LLP462,4910 00For
SCS Capital Management LLC354,3390 00For
Pier Capital, LLC311,5150 00For
Northern Trust270,0660 00For
Dimensional0245,306 00Against
RBC Capital Markets, LLC229,7070 00For
T. Rowe Price216,1130 00For

Showing the 25 largest of 145 asset managers. See all 145 in the interactive database.

3. To approve the amendment and restatement of the Company's 2017 Employee, Director and Consultant Equity Incentive Plan

COMPENSATIONMajority of the votes cast: no

Meeting held 2026-06-09.

Combines 2 wordings of this item as funds reported it.

29% Majority: no · of votes cast

FOR 29%AGAINST 71%
FOR: 9,677,232AGAINST: 24,004,124

Quanterix Corporation’s own tally for this item (“Proposal 4: Approval of an Amendment and Restatement of the 2017 Plan:”): 9,677,232 for, 24,004,124 against, per its Form 8-K filed 2026-06-10 (Item 5.07). FOR was not more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 25% for, 62% against (87% of the company cast a for/against vote).

The 48 asset managers below cast 15% of the shares they voted on this item FOR (1,688,376 for, 9,420,847 against).

FOR 15%AGAINST 85%
FOR: 1,688,376 (15.2%)AGAINST: 9,420,847 (84.8%)
Largest asset managers voting on “To approve the amendment and restatement of the Company's 2017 Employee, Director and Consultant Equity Incent” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity02,559,254 00Against
Vanguard3,4202,334,760 00Against
BlackRock01,705,764 00Against
FIRST EAGLE FUNDS1,227,8670 00For
Columbia Threadneedle0982,128 00Against
WILLIAM BLAIR FUNDS0719,776 00Against
Charles Schwab0346,328 00Against
Pier Capital, LLC311,5150 00For
Dimensional0163,513 00Against
Equitable0103,882 00Against
American Century0101,372 00Against
RBB FUND, INC.89,2500 00For
TIAA071,445 00Against
BRIDGEWAY FUNDS INC068,226 00Against
Dunham Funds56,3240 00For
Lincoln Financial029,920 00Against
Northern Trust024,529 00Against
AIG/SunAmerica022,621 00Against
Global X019,776 00Against
Bridge Builder Trust018,365 00Against
Pacific Life017,660 00Against
Brighthouse013,742 00Against
Invesco011,738 00Against
John Hancock011,462 00Against
Nationwide011,289 00Against

Showing the 25 largest of 48 asset managers. See all 48 in the interactive database.

4. Election of Directors: William P. Donnelly

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-06-09.

Combines 3 wordings of this item as funds reported it.

92% Majority: yes · of votes cast

FOR 92%8%
FOR: 30,927,792WITHHELD: 2,757,653

Quanterix Corporation’s own tally for this item (“Elect Director: William P. Donnelly”): 30,927,792 for, 2,757,653 withheld, per its Form 8-K filed 2026-06-10 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 80% for, 7% withheld (87% of the company cast a for/withheld vote).

The 47 asset managers below cast 99.9% of the shares they voted on this item FOR (10,792,066 for, 5,641 against).

FOR 99.9%
FOR: 10,792,066 (99.9%)AGAINST: 5,641 (0.1%)
Largest asset managers voting on “Election of Directors: William P. Donnelly” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,559,2540 00For
Vanguard2,336,2321,947 00For
BlackRock1,705,7640 00For
FIRST EAGLE FUNDS1,227,8670 00For
Columbia Threadneedle982,1280 00For
WILLIAM BLAIR FUNDS719,7760 00For
Charles Schwab346,3280 00For
Dimensional163,5130 00For
Equitable103,8820 00For
American Century101,3720 00For
RBB FUND, INC.89,2500 00For
TIAA71,4450 00For
BRIDGEWAY FUNDS INC68,2260 00For
Dunham Funds56,3240 00For
Lincoln Financial29,9200 00For
Northern Trust24,5290 00For
AIG/SunAmerica22,6210 00For
Global X19,7760 00For
Bridge Builder Trust18,3650 00For
Pacific Life17,6600 00For
Brighthouse13,7420 00For
Invesco11,7380 00For
John Hancock11,4620 00For
Nationwide11,2890 00For
Allspring11,2720 00For

Showing the 25 largest of 47 asset managers. See all 47 in the interactive database.

5. Election of Directors: Ivana Magovcevic-Liebisch, Ph.D., J.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2026-06-09.

Combines 3 wordings of this item as funds reported it.

90% Majority: yes · of votes cast

FOR 90%10%
FOR: 30,314,520WITHHELD: 3,375,724

Quanterix Corporation’s own tally for this item (“Elect Director: Ivana Magovčević-Liebisch, Ph.D., J.D.”): 30,314,520 for, 3,375,724 withheld, per its Form 8-K filed 2026-06-10 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 78% for, 9% withheld (87% of the company cast a for/withheld vote).

The 47 asset managers below cast 99.9% of the shares they voted on this item FOR (10,794,221 for, 3,486 against).

FOR 99.9%
FOR: 10,794,221 (100.0%)AGAINST: 3,486 (0.0%)
Largest asset managers voting on “Election of Directors: Ivana Magovcevic-Liebisch, Ph.D., J.D.” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,559,2540 00For
Vanguard2,338,16811 00For
BlackRock1,705,7640 00For
FIRST EAGLE FUNDS1,227,8670 00For
Columbia Threadneedle982,1280 00For
WILLIAM BLAIR FUNDS719,7760 00For
Charles Schwab346,3280 00For
Dimensional163,5130 00For
Equitable103,8820 00For
American Century101,3720 00For
RBB FUND, INC.89,2500 00For
TIAA71,4450 00For
BRIDGEWAY FUNDS INC68,2260 00For
Dunham Funds56,3240 00For
Lincoln Financial29,9200 00For
Northern Trust24,5290 00For
AIG/SunAmerica22,6210 00For
Global X19,7760 00For
Bridge Builder Trust18,3650 00For
Pacific Life17,6600 00For
Brighthouse13,7420 00For
Invesco11,7380 00For
John Hancock11,4620 00For
Nationwide11,2890 00For
Allspring11,2720 00For

Showing the 25 largest of 47 asset managers. See all 47 in the interactive database.

6. To ratify, on an advisory basis, the appointment of KPMG LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026

AUDIT-RELATEDMajority of the votes cast: yes

Meeting held 2026-06-09.

Combines 2 wordings of this item as funds reported it.

99.6% Majority: yes · of votes cast

FOR 99.6%
FOR: 38,728,204AGAINST: 137,595

Quanterix Corporation’s own tally for this item (“Proposal 3: Ratification of KPMG, LLP as the Company's Independent Registered Public Accounting Firm:”): 38,728,204 for, 137,595 against, per its Form 8-K filed 2026-06-10 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 99.6% for, 0.4% against (99.9% of the company cast a for/against vote).

The 47 asset managers below cast 100% of the shares they voted on this item FOR (10,797,707 for, 0 against).

FOR 100%
FOR: 10,797,707 (100.0%)
Largest asset managers voting on “To ratify, on an advisory basis, the appointment of KPMG LLP as the Company's independent registered public ac” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,559,2540 00For
Vanguard2,338,1790 00For
BlackRock1,705,7640 00For
FIRST EAGLE FUNDS1,227,8670 00For
Columbia Threadneedle982,1280 00For
WILLIAM BLAIR FUNDS719,7760 00For
Charles Schwab346,3280 00For
Dimensional163,5130 00For
Equitable103,8820 00For
American Century101,3720 00For
RBB FUND, INC.89,2500 00For
TIAA71,4450 00For
BRIDGEWAY FUNDS INC68,2260 00For
Dunham Funds56,3240 00For
Lincoln Financial29,9200 00For
Northern Trust24,5290 00For
AIG/SunAmerica22,6210 00For
Global X19,7760 00For
Bridge Builder Trust18,3650 00For
Pacific Life17,6600 00For
Brighthouse13,7420 00For
Invesco11,7380 00For
John Hancock11,4620 00For
Nationwide11,2890 00For
Allspring11,2720 00For

Showing the 25 largest of 47 asset managers. See all 47 in the interactive database.

7. Approval of an amendment to our Charter to declassify our Board.

SHAREHOLDER RIGHTS AND DEFENSESMajority of the votes cast: yes

Meeting held 2025-09-29.

99.5% Majority: yes · of votes cast

FOR 99.5%
FOR: 35,685,740AGAINST: 159,250

Quanterix Corporation’s own tally for this item (“Proposal 4: Vote to Approve an Amendment to the Charter to Declassify the Board:”): 35,685,740 for, 159,250 against, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 92% for, 0.5% against (92% of the company cast a for/against vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (8,893,796 for, 0 against).

FOR 100%
FOR: 8,893,796 (100.0%)
Largest asset managers voting on “Approval of an amendment to our Charter to declassify our Board.” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,742,0250 00For
Vanguard2,411,2960 00For
BlackRock1,564,8500 00For
Columbia Threadneedle730,0580 00For
WILLIAM BLAIR FUNDS386,5600 00For
Charles Schwab331,4480 00For
Dimensional187,9300 00For
American Century89,3310 00For
QUANTITATIVE MASTER SERIES LLC62,2970 00For
Equitable60,0390 00For
Invesco50,7640 00For
Lincoln Financial29,9200 00For
Northern Trust26,2650 00For
Goldman Sachs22,6610 00For
Global X20,6470 00For
Bridge Builder Trust18,3650 00For
Pacific Life16,6710 00For
Brighthouse15,5330 00For
John Hancock14,4220 00For
Nationwide13,1550 00For
TIAA12,6580 00For
MASTER INVESTMENT PORTFOLIO8,9500 00For
Jackson National8,7970 00For
Allspring8,7350 00For
ProShares8,5100 00For

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

8. Approval of an amendment to our Charter to eliminate the supermajority stockholder vote requirement for stockholders to amend our Bylaws.

CORPORATE GOVERNANCEMajority of the votes cast: yes

Meeting held 2025-09-29.

Combines 2 wordings of this item as funds reported it.

99.2% Majority: yes · of votes cast

FOR 99.2%
FOR: 35,558,103AGAINST: 256,746

Quanterix Corporation’s own tally for this item (“Proposal 6: Vote to Approve an Amendment to the Charter to Eliminate the Supermajority Stockholder Vote Required to Amend the Bylaws:”): 35,558,103 for, 256,746 against, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 91% for, 0.7% against (92% of the company cast a for/against vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (8,893,796 for, 0 against).

FOR 100%
FOR: 8,893,796 (100.0%)
Largest asset managers voting on “Approval of an amendment to our Charter to eliminate the supermajority stockholder vote requirement for stockh” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,742,0250 00For
Vanguard2,411,2960 00For
BlackRock1,564,8500 00For
Columbia Threadneedle730,0580 00For
WILLIAM BLAIR FUNDS386,5600 00For
Charles Schwab331,4480 00For
Dimensional187,9300 00For
American Century89,3310 00For
QUANTITATIVE MASTER SERIES LLC62,2970 00For
Equitable60,0390 00For
Invesco50,7640 00For
Lincoln Financial29,9200 00For
Northern Trust26,2650 00For
Goldman Sachs22,6610 00For
Global X20,6470 00For
Bridge Builder Trust18,3650 00For
Pacific Life16,6710 00For
Brighthouse15,5330 00For
John Hancock14,4220 00For
Nationwide13,1550 00For
TIAA12,6580 00For
MASTER INVESTMENT PORTFOLIO8,9500 00For
Jackson National8,7970 00For
Allspring8,7350 00For
ProShares8,5100 00For

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

9. Approval of an amendment to our Charter to eliminate the supermajority stockholder vote requirement to amend certain provisions of our Charter.

CORPORATE GOVERNANCEMajority of the votes cast: yes

Meeting held 2025-09-29.

Combines 2 wordings of this item as funds reported it.

99.2% Majority: yes · of votes cast

FOR 99.2%
FOR: 35,554,910AGAINST: 253,407

Quanterix Corporation’s own tally for this item (“Proposal 5: Vote to Approve an Amendment to the Charter to Eliminate the Supermajority Stockholder Vote Required to Amend Certain Charter Provisions:”): 35,554,910 for, 253,407 against, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 91% for, 0.7% against (92% of the company cast a for/against vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (8,893,796 for, 0 against).

FOR 100%
FOR: 8,893,796 (100.0%)
Largest asset managers voting on “Approval of an amendment to our Charter to eliminate the supermajority stockholder vote requirement to amend c” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,742,0250 00For
Vanguard2,411,2960 00For
BlackRock1,564,8500 00For
Columbia Threadneedle730,0580 00For
WILLIAM BLAIR FUNDS386,5600 00For
Charles Schwab331,4480 00For
Dimensional187,9300 00For
American Century89,3310 00For
QUANTITATIVE MASTER SERIES LLC62,2970 00For
Equitable60,0390 00For
Invesco50,7640 00For
Lincoln Financial29,9200 00For
Northern Trust26,2650 00For
Goldman Sachs22,6610 00For
Global X20,6470 00For
Bridge Builder Trust18,3650 00For
Pacific Life16,6710 00For
Brighthouse15,5330 00For
John Hancock14,4220 00For
Nationwide13,1550 00For
TIAA12,6580 00For
MASTER INVESTMENT PORTFOLIO8,9500 00For
Jackson National8,7970 00For
Allspring8,7350 00For
ProShares8,5100 00For

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

10. Election of three director nominees to our Board to serve three-year terms expiring at the annual meeting of stockholders in 2028 or until their successors are duly elected and qualified: David R. Walt, Ph.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-29.

Combines 3 wordings of this item as funds reported it.

83% Majority: yes · of votes cast

FOR 83%WITHHELD 17%
FOR: 29,705,101WITHHELD: 6,190,294

Quanterix Corporation’s own tally for this item (“Elect Director: David R. Walt, Ph.D.”): 29,705,101 for, 6,190,294 withheld, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 76% for, 16% withheld (92% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (7,574,287 for, 0 against).

FOR 85%ABSTAIN 15%
FOR: 7,574,287 (85.2%)ABSTAIN: 1,319,509 (14.8%)
Largest asset managers voting on “Election of three director nominees to our Board to serve three-year terms expiring at the annual meeting of s” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,639,8530 102,1720For
Vanguard2,411,2960 00For
BlackRock1,564,8500 00For
Columbia Threadneedle730,0580 00For
WILLIAM BLAIR FUNDS00 386,5600Abstain
Charles Schwab00 331,4480Abstain
Dimensional00 187,9300Abstain
American Century00 89,3310Abstain
QUANTITATIVE MASTER SERIES LLC62,2970 00For
Equitable29,5390 30,5000Abstain
Invesco50,7640 00For
Lincoln Financial00 29,9200Abstain
Northern Trust00 26,2650Abstain
Goldman Sachs22,6610 00For
Global X00 20,6470Abstain
Bridge Builder Trust18,3650 00For
Pacific Life16,6710 00For
Brighthouse00 15,5330Abstain
John Hancock00 14,4220Abstain
Nationwide7,4610 5,6940For
TIAA12,6580 00For
MASTER INVESTMENT PORTFOLIO00 8,9500Abstain
Jackson National00 8,7970Abstain
Allspring00 8,7350Abstain
ProShares00 8,5100Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

11. Election of three director nominees to our Board to serve three-year terms expiring at the annual meeting of stockholders in 2028 or until their successors are duly elected and qualified: Masoud Toloue, Ph.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-29.

Combines 3 wordings of this item as funds reported it.

91% Majority: yes · of votes cast

FOR 91%9%
FOR: 32,552,678WITHHELD: 3,342,717

Quanterix Corporation’s own tally for this item (“Elect Director: Masoud Toloue, Ph.D.”): 32,552,678 for, 3,342,717 withheld, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 84% for, 9% withheld (92% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (8,096,572 for, 0 against).

FOR 91%9%
FOR: 8,096,572 (91.0%)ABSTAIN: 797,224 (9.0%)
Largest asset managers voting on “Election of three director nominees to our Board to serve three-year terms expiring at the annual meeting of s” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,742,0250 00For
Vanguard2,411,2960 00For
BlackRock1,564,8500 00For
Columbia Threadneedle730,0580 00For
WILLIAM BLAIR FUNDS00 386,5600Abstain
Charles Schwab331,4480 00For
Dimensional00 187,9300Abstain
American Century00 89,3310Abstain
QUANTITATIVE MASTER SERIES LLC62,2970 00For
Equitable60,0390 00For
Invesco50,7640 00For
Lincoln Financial26,6000 3,3200For
Northern Trust00 26,2650Abstain
Goldman Sachs22,6610 00For
Global X20,6470 00For
Bridge Builder Trust18,3650 00For
Pacific Life16,6710 00For
Brighthouse00 15,5330Abstain
John Hancock00 14,4220Abstain
Nationwide13,1550 00For
TIAA12,6580 00For
MASTER INVESTMENT PORTFOLIO00 8,9500Abstain
Jackson National00 8,7970Abstain
Allspring00 8,7350Abstain
ProShares00 8,5100Abstain

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

12. Election of three director nominees to our Board to serve three-year terms expiring at the annual meeting of stockholders in 2028 or until their successors are duly elected and qualified: Myla Lai-Goldman, M.D.

DIRECTOR ELECTIONSMajority of the votes cast: yes

Meeting held 2025-09-29.

Combines 3 wordings of this item as funds reported it.

99.5% Majority: yes · of votes cast

FOR 99.5%
FOR: 35,731,623WITHHELD: 163,772

Quanterix Corporation’s own tally for this item (“Elect Director: Myla Lai-Goldman, M.D.”): 35,731,623 for, 163,772 withheld, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 92% for, 0.5% withheld (92% of the company cast a for/withheld vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (8,893,796 for, 0 against).

FOR 100%
FOR: 8,893,796 (100.0%)
Largest asset managers voting on “Election of three director nominees to our Board to serve three-year terms expiring at the annual meeting of s” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,742,0250 00For
Vanguard2,411,2960 00For
BlackRock1,564,8500 00For
Columbia Threadneedle730,0580 00For
WILLIAM BLAIR FUNDS386,5600 00For
Charles Schwab331,4480 00For
Dimensional187,9300 00For
American Century89,3310 00For
QUANTITATIVE MASTER SERIES LLC62,2970 00For
Equitable60,0390 00For
Invesco50,7640 00For
Lincoln Financial29,9200 00For
Northern Trust26,2650 00For
Goldman Sachs22,6610 00For
Global X20,6470 00For
Bridge Builder Trust18,3650 00For
Pacific Life16,6710 00For
Brighthouse15,5330 00For
John Hancock14,4220 00For
Nationwide13,1550 00For
TIAA12,6580 00For
MASTER INVESTMENT PORTFOLIO8,9500 00For
Jackson National8,7970 00For
Allspring8,7350 00For
ProShares8,5100 00For

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

13. Ratification, on an advisory basis, of the appointment of KPMG, LLP as the Company's independent public accounting firm for the fiscal year ending December 31, 2025.

AUDIT-RELATEDMajority of the votes cast: yes

Meeting held 2025-09-29.

99.7% Majority: yes · of votes cast

FOR 99.7%
FOR: 40,087,908AGAINST: 82,320

Quanterix Corporation’s own tally for this item (“Proposal 3: Ratification of KPMG, LLP as the Company's Independent Registered Public Accounting Firm:”): 40,087,908 for, 82,320 against, per its Form 8-K filed 2025-10-02 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item. Of all 38,873,000 outstanding shares: 100% for, 0.3% against (100% of the company cast a for/against vote).

The 42 asset managers below cast 100% of the shares they voted on this item FOR (8,893,796 for, 0 against).

FOR 100%
FOR: 8,893,796 (100.0%)
Largest asset managers voting on “Ratification, on an advisory basis, of the appointment of KPMG, LLP as the Company's independent public accoun” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Fidelity2,742,0250 00For
Vanguard2,411,2960 00For
BlackRock1,564,8500 00For
Columbia Threadneedle730,0580 00For
WILLIAM BLAIR FUNDS386,5600 00For
Charles Schwab331,4480 00For
Dimensional187,9300 00For
American Century89,3310 00For
QUANTITATIVE MASTER SERIES LLC62,2970 00For
Equitable60,0390 00For
Invesco50,7640 00For
Lincoln Financial29,9200 00For
Northern Trust26,2650 00For
Goldman Sachs22,6610 00For
Global X20,6470 00For
Bridge Builder Trust18,3650 00For
Pacific Life16,6710 00For
Brighthouse15,5330 00For
John Hancock14,4220 00For
Nationwide13,1550 00For
TIAA12,6580 00For
MASTER INVESTMENT PORTFOLIO8,9500 00For
Jackson National8,7970 00For
Allspring8,7350 00For
ProShares8,5100 00For

Showing the 25 largest of 42 asset managers. See all 42 in the interactive database.

14. APPROVAL, ON AN ADVISORY BASIS, OF THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE OFFICERS.

SECTION 14A SAY-ON-PAY VOTES

Reported under meeting date 2025-09-23; no official results on file for that date.

100% fund support · no official result

FOR 100%

The 4 asset managers below cast 100% of the shares they voted on this item FOR (423 for, 0 against).

FOR: 423 (100.0%)
Largest asset managers voting on “APPROVAL, ON AN ADVISORY BASIS, OF THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE OFFICERS.” at Quanterix Corporation, 2025-2026
Asset managerForAgainst AbstainWithheldVote
Advisors' Inner Circle Fund III1600 00For
L2 Asset Management, LLC1600 00For
Aletheian Wealth Advisors LLC540 00For
Elyxium Wealth, LLC490 00For

Largest Quanterix Corporation shareholders voting in 2025-2026

Ranked by the number of Quanterix Corporation shares each manager voted on the most widely held ballot item of the 2025-2026 meeting, shown as a share of the 38,873,000 shares outstanding at the time of that meeting.

Top Quanterix Corporation shareholders by shares voted, 2025-2026
#Asset manager % of shares outstanding
1Portolan Capital Management, LLC 9.08%
2AMERIPRISE FINANCIAL INC 9.06%
3Fidelity 7.38%
4BlackRock 6.70%
5Vanguard 6.41%
6Invenomic Capital Management LP 2.73%
7GEODE CAPITAL MANAGEMENT, LLC 2.49%
8WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 2.20%
9Columbia Threadneedle 1.88%
10EASTERLY INVESTMENT PARTNERS LLC 1.73%

Reported Quanterix Corporation ownership

Positions disclosed to the SEC on Schedules 13D and 13G, Form 13F and the company’s own proxy statement (DEF 14A).

Quanterix Corporation beneficial owners on record for the 2025-2026 proxy season
Holder % outstanding Disclosure
Entities affiliated with Ameriprise Financial, Inc. 12.85% DEF14A
Ameriprise Financial, Inc. 9.11% 13G
BlackRock 8.43% 13F
First Eagle Investment Management, LLC 7.08% 13G
Vanguard Group 6.89% 13F
Entities affiliated with Telegraph Hill Partners, L.P. 6.44% DEF14A
Masoud Toloue, Ph.D. 2.32% DEF14A
State Street 2.31% 13F
Morgan Stanley 2.12% 13F
Millennium Management 1.77% 13F

Percentages above are of 38,873,000 shares outstanding, as reported by Quanterix Corporation on its Form 10-Q dated 2025-06-30 (see the filing on EDGAR). This is the count contemporaneous with the 2025-2026 meeting, so the percentages are the ones that were true then, not ones restated against today’s share count.

About this page

Every figure above is derived from filings made with the US Securities and Exchange Commission: Form N-PX, in which registered investment companies and institutional managers disclose how they voted every proxy, and Form 8-K Item 5.07, in which the company reports its own meeting results. Shares outstanding are taken from Quanterix Corporation’s 10-Q dated 2025-06-30. This page is a static snapshot rebuilt weekly on 04 October 2026; a live search always shows the current data.

At Quanterix Corporation's 2 shareholder meetings in the 2025-2026 proxy season (held 2025-09-29 and 2026-06-09), 174 asset managers reported how they voted in their SEC Form N-PX filings, covering 2,021 separate fund positions. Their filings are grouped here into 14 reported items; because filers word the same ballot item differently, that can be more than the number of items on the ballot. On the most widely held item of the season, voted at the meeting held 2025-09-29 — Approval, on an advisory basis, of the compensation of the Company's named executive officers. — FOR was 85% of the votes cast (FOR divided by FOR plus AGAINST, the conventional basis for proxy support; abstentions, broker non-votes and unvoted shares are excluded because none of them took a side), which is more than half. Whether the item was approved is for the filing to say; that statement has not been read for this item. Source: Quanterix Corporation's Form 8-K, Item 5.07, filed with the U.S. Securities and Exchange Commission on 2025-10-02.

Quanterix Corporation proxy season coverage: 2023-2024 · 2025-2026 (this page).