Quanterix Corp — Director's Dealing 2021

Jul 6, 2021

SEC Form 4/A — Form 4/A

Issuer: Quanterix Corp (QTRX)
CIK: 0001503274
Period of Report: 2021-04-01

Reporting Person: CRANDELL KEITH (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-03-09	Common Stock	J	259540	—	Disposed	1645940	Indirect
2021-03-09	Common Stock	J	165460	—	Disposed	1049310	Indirect
2021-03-09	Common Stock	J	13643	—	Acquired	28069	Direct
2021-03-12	Common Stock	J	259540	—	Disposed	1386400	Indirect
2021-03-12	Common Stock	J	165460	—	Disposed	883850	Indirect
2021-03-12	Common Stock	J	13644	—	Acquired	41713	Direct
2021-04-01	Common Stock	A	211	$61.45	Acquired	41924	Direct

Footnotes

F1: This amended Form 4 is being filed solely to correct the inadvertent omission of details concerning changes in the form of beneficial ownership of these securities by the Reporting Person as a result of pro rata distributions of shares by ARCH Venture Fund VI, L.P. ("ARCH VI") and ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"), which took place in March 2021.

F2: Distribution of Common Stock held by a limited partnership to its partners for no consideration.

F3: These shares are directly held by ARCH VI. ARCH Venture Partners VI, L.P. ("GPLP"), the sole general partner of ARCH VI, may be deemed to beneficially own the shares held by ARCH VI. ARCH Venture Partners VI, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by ARCH VI. The Reporting Person is a managing director of the GPLLC and shares voting and investment control with respect to these shares. The Reporting Person may be deemed to beneficially own the shares held by ARCH VI. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein, if any.

F4: These shares are directly held by ARCH Overage. ARCH Venture Partners VIII, LLC ("ARCH VIII LLC") the sole general partner of ARCH Overage, may be deemed to beneficially own the shares held by ARCH Overage. The Reporting Person is a managing director of the ARCH VIII LLC and shares voting and investment control with respect to these shares. The Reporting Person may be deemed to beneficially own the shares held by ARCH Overage. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein, if any.

F5: Change from indirect to direct ownership of shares previously reported as beneficially owned by the Reporting Person.

F6: Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the first quarter of 2021.

F7: Closing price of the Company's common stock on the Nasdaq Global Market on April 1, 2021.

F8: Includes 2,270 restricted stock units.