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Filing Details

Accession Number:: 0001104659-17-073156
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2017-12-13 16:25:35
Reporting Period:: 2017-12-11

Accepted Time:: 2017-12-13 16:25:35
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1503274	Quanterix Corp	QTRX	()	4

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1219042	Robert Nelsen	8755 West Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1219043	Clinton Bybee	8755 West Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1222135	Arch Venture Fund Vi Lp	8755 West Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1274410	Arch Venture Partners Vi Lp	8755 West Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1274412	Arch Venture Partners Vi Llc	8755 West Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1616165	Arch Venture Partners Viii, Llc	8755 West Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1617237	Arch Venture Fund Viii Overage, L.p.	8755 West Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2017-12-11	398,257	$0.00	398,257	No	4	C	Direct
Common Stock	Acquisiton	2017-12-11	1,045,426	$0.00	1,443,683	No	4	C	Direct
Common Stock	Acquisiton	2017-12-11	477,042	$0.00	1,920,725	No	4	C	Direct
Common Stock	Acquisiton	2017-12-11	109,769	$0.00	2,030,494	No	4	C	Direct
Common Stock	Acquisiton	2017-12-11	381,507	$0.00	2,412,001	No	4	C	Direct
Common Stock	Acquisiton	2017-12-11	1,271,684	$0.00	1,271,684	No	4	C	Direct
Common Stock	Acquisiton	2017-12-11	266,000	$15.00	1,537,684	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	P	Direct

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Series A-1 Preferred Stock	Disposition	2017-12-11	1,280,000	$0.00	398,257	$0.00
Common Stock	Series A-2 Preferred Stock	Disposition	2017-12-11	3,360,000	$0.00	1,045,426	$0.00
Common Stock	Series B Preferred Stock	Disposition	2017-12-11	1,533,214	$0.00	477,042	$0.00
Common Stock	Series C Preferred Stock	Disposition	2017-12-11	352,800	$0.00	109,769	$0.00
Common Stock	Series D Preferred Stock	Disposition	2017-12-11	1,226,158	$0.00	381,507	$0.00
Common Stock	Series D Preferred Stock	Disposition	2017-12-11	4,087,193	$0.00	1,271,684	$0.00

Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct
No	4	C	Direct

Footnotes

The shares of preferred stock automatically converted into common stock immediately prior to the closing of the Issuer's initial public offering using a calculation defined in the Issuer's Restated Certificate of Incorporation, as amended, based on the initial purchase price and the conversion rate in effect at the time of conversion. The shares of preferred stock automatically converted on a 1-for-3.214 basis and such conversion rate is reflected in the amount of common stock underlying the security.
The shares are held of record by ARCH Venture Fund VI, L.P. ("ARCH Fund VI"). The sole general partner of ARCH Fund VI is ARCH Venture Partners VI, L.P. ("ARCH Partners VI"), which may be deemed to beneficially own the shares held by ARCH Fund VI. The sole general partner of ARCH Partners VI is ARCH Venture Partners VI, LLC ("ARCH VI LLC"), which may be deemed to beneficially own the shares held by ARCH Fund VI. ARCH Partners VI and ARCH VI LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein. As a managing director of ARCH VI LLC, the Reporting Person may be deemed to beneficially own the shares held by ARCH Fund VI. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
The shares are held of record by ARCH Venture Fund VIII Overage, L.P. ("ARCH Fund Overage"). The sole general partner of ARCH Fund Overage is ARCH Venture Partners VIII, LLC ("ARCH VIII LLC"), which may be deemed to beneficially own the shares held by ARCH Fund Overage. ARCH VIII LLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein. As a managing director of ARCH VIII LLC, the Reporting Person may be deemed to beneficially own the shares held by ARCH Fund Overage. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
Reflects shares purchased in the Issuer's initial public offering.
These shares were convertible into the Issuer's common stock in accordance with the Issuer's Restated Certificate of Incorporation, as amended, at any time after the issuance of such shares, at the holder's election.
Not applicable.