Jason Faessler was named Chief Financial Officer of Quanterix Corp. As of November 6, 2026, Quanterix Corp has reported 3 leadership change filings to the SEC under Item 5.02 of Form 8-K, from May 12, 2026 to June 9, 2026, naming 2 appointments (Form 8-K, June 9, 2026).
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Key facts
- · In / out: In · Person: Jason Faessler · Role: Chief Financial Officer · 8-K, 2026-06-09
- · In / out: In · Person: Anthony Catalano · Role: Chief Operating Officer · 8-K, 2026-05-26
- · In / out: Reported · Person: not named in the filing · 8-K, 2026-05-12
Quanterix Corp reported changes in 3 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-05-12 to 2026-06-09. They name 2 people. Every row below is cited to the filing it comes from, and this page adds each new change as Quanterix Corp files it.
Also on the record for Quanterix Corp
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| August 14, 2026 | Stake report, Schedule 13G/A, by Portolan Capital Management, LLC | 4.02% of the class | 5%+ stakes | Source |
| August 6, 2026 | Stake report, Schedule 13G, by First Eagle Investment Management, LLC | 5.8% of the class | 5%+ stakes | Source |
| May 15, 2026 | Stake report, Schedule 13G/A, by Ameriprise Financial, Inc. | 7.5% of the class | 5%+ stakes | Source |
| May 15, 2026 | Stake report, Schedule 13G/A, by Portolan Capital Management, LLC | 6.25% of the class | 5%+ stakes | Source |
| May 7, 2026 | Stake report, Schedule 13G/A, by Ameriprise Financial, Inc. | 2.1% of the class | 5%+ stakes | Source |
| March 27, 2026 | Stake report, Schedule 13G/A, by The Vanguard Group | — | 5%+ stakes | Source |
| February 17, 2026 | Stake report, Schedule 13G/A, by Ameriprise Financial, Inc. | 10.7% of the class | 5%+ stakes | Source |
| November 19, 2025 | Stake report, Schedule 13G, by Telegraph Hill Partners III, L.P. | 5.4% of the class | 5%+ stakes | Source |
| November 14, 2025 | Stake report, Schedule 13G/A, by Ameriprise Financial, Inc. | 9.1% of the class | 5%+ stakes | Source |
| August 13, 2025 | Stake report, Schedule 13G/A, by Portolan Capital Management, LLC | 9.36% of the class | 5%+ stakes | Source |
| July 17, 2025 | Stake report, Schedule 13G/A, by BlackRock, Inc. | 7.3% of the class | 5%+ stakes | Source |
| July 15, 2025 | Stake report, Schedule 13D/A, by Kent Lake PR LLC | 4.5% of the class | 5%+ stakes | Source |
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More on Quanterix Corp and the records around it.
Quanterix Corp elsewhere on the record
- 5%+ stake filings Aug 2026
- Who owns it
Companies that share a holder
- Kent Lake Partners LP also filed stake reports on 1 other company: UNIVERSAL ELECTRONICS INC (Nov 2025)
- Portolan Capital Management, LLC also filed stake reports on 13 other companies: LANTRONIX, INC. (Oct 2026), SILICOM LTD. (Sep 2026), Real Brokerage Inc (Aug 2026)
- First Eagle Investment Management, LLC also filed stake reports on 16 other companies: AMTECH SYSTEMS INC (Aug 2026), DENTSPLY SIRONA Inc. (Aug 2026), Warrior Met Coal Inc (Aug 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-06-09 | In | Chief Financial Officer | 8-K, 2026-06-09 | ||
| 2026-05-26 | In | Chief Operating Officer | 8-K, 2026-05-26 | ||
| 2026-05-12 | Reported | not named in the filing | 8-K, 2026-05-12 |
Who leads Quanterix Corp, as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Financial Officer: Jason Faessler, appointed (filed 2026-06-09).
- Chief Operating Officer: Anthony Catalano, appointed (filed 2026-05-26).
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Find candidates like Chief Financial Officer at Quanterix CorpEvery change, in the filing's words
Appointed: Jason Faessler, Chief Financial Officer
The Board of Directors of Quanterix Corporation (the "Company") has appointed Jason Faessler as the Chief Financial Officer and Treasurer of the Company.
- He is expected to commence employment with the Company on June 22, 2026.
- Mr. Faessler mostly recently was employed by Brucker Corporation as Senior Vice President of Finance, leading global FP&A and the Americas finance organization.
- His responsibilities have included strategic planning, operational finance and capital decision-making.
- Before that, he was Senior Director of Finance at Parexel Corporation from April 2018 to December 2018 and Director of Finance at Parexel from November 2015 to April 2018, where he led its early- and late-phase clinical divisions, driving growth and profitability across both businesses.
- Prior to Parexel, Mr. Faessler worked as Director of Finance and Sales Operations at Harvard Business Publishing and held several financial planning, analysis and operation roles at EMC Corporation.
- Mr. Faessler earned an MBA from the F.W. Olin Graduate School of Business at Babson College and a BA from the University of Massachusetts Boston.
- The Company has entered into an employment agreement dated May 31, 2026 with Mr. Faessler (the "Employment Agreement") in connection with his appointment as Chief Financial Officer and Treasurer.
- The Employment Agreement provides for an initial annualized base salary of $475,000, a cash sign-on bonus of $200,000, and eligibility for an annual performance bonus with an annual bonus target of up to 50% of Mr. Faessler's base salary.
Appointed: Anthony Catalano, Chief Operating Officer
On May 14, 2026, Anthony Catalano was appointed as the Chief Operating Officer of Quanterix Corporation (the "Company").
- Mr. Catalano mostly recently was employed by Flagship Pioneering, Inc. as Senior Vice of President Real Estate and Asset Management from September 2025 to May 2026.
- Prior to Flagship Pioneering, from July 2025 to August 2025, he was employed by the Company, following the Company's acquisition of Akoya Biosciences, Inc. ("Akoya").
- Mr. Catalano was the Senior Vice President of Operations at Akoya from April 2023 to July 2025.
- He was the Senior Vice President of Operations & Development with Bruker Cellular Analysis, Inc. from June 2021 to April 2023 and the Senior Director of Operations with Revvity, Inc. from 2010 to May 2021.
- Mr. Catalano earned an MS in Chemistry from Brandeis University and a BS in Chemistry from the University of Massachusetts at Lowell.
- The Company entered into an employment agreement with Mr. Catalano (the "Employment Agreement") in connection with his appointment as Chief Operating Officer.
- The Employment Agreement provides for an initial annualized base salary of $400,000, a cash sign-on bonus of $50,000 and eligibility for an annual performance bonus with an annual bonus target of up to 50% of Mr. Catalano's base salary.
Reported
Ms. Sriram's departure is not related to any disagreements with the Company on any matter relating to its accounting practices, financial statements, internal controls, or operations.
- Vandana Sriram will be leaving Quanterix Corporation (the "Company") and will no longer serve as the Chief Financial Officer and Treasurer of the Company effective June 15, 2026.
- Ms. Sriram will receive severance benefits in accordance with the terms of her employment agreement with the Company, as amended, consisting of the continued payment of her base salary for 12 months, payment of an amount equal to her annual target bonus for 2026, and subsidized health benefits for 12 months.
- The Company is conducting a search, with the assistance of a leading executive search firm, to identify a successor for the Chief Financial Officer position.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.