Quanterix Corp — Director's Dealing 2017

Dec 13, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Quanterix Corp (QTRX)
CIK: 0001503274
Period of Report: 2017-12-11

Reporting Person: WALT DAVID R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-12-11	Common Stock	C	32959	—	Acquired	429660	Direct
2017-12-11	Common Stock	C	86517	—	Acquired	516177	Direct
2017-12-11	Common Stock	C	334985	—	Acquired	851162	Direct
2017-12-11	Common Stock	C	28691	—	Acquired	879853	Direct
2017-12-11	Common Stock	C	135647	—	Acquired	1015500	Direct
2017-12-11	Common Stock	P	200000	$15.00	Acquired	1215500	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-12-11	Series A-1 Preferred Stock	$	C	105931	Disposed		Common Stock (32959)	Direct
2017-12-11	Series A-2 Preferred Stock	$	C	278068	Disposed		Common Stock (86517)	Direct
2017-12-11	Series B Preferred Stock	$	C	1076642	Disposed		Common Stock (334985)	Direct
2017-11-29	Warrant to Purchase Series C Preferred Stock (right to buy)	$3.3299	X	4327	Disposed	2017-11-30	Series C Preferred Stock (4327)	Direct
2017-11-29	Series C Preferred Stock	$	X	4327	Acquired		Common Stock (1346)	Direct
2017-11-29	Warrant to Purchase Series C Preferred Stock (right to buy)	$3.3299	X	3060	Disposed	2017-11-30	Series C Preferred Stock (3060)	Direct
2017-11-29	Series C Preferred Stock	$	X	3060	Acquired		Common Stock (952)	Direct
2017-11-29	Warrant to Purchase Series C Preferred Stock (right to buy)	$3.3299	X	707	Disposed	2017-11-30	Series C Preferred Stock (707)	Direct
2017-11-29	Series C Preferred Stock	$	X	707	Acquired		Common Stock (219)	Direct
2017-12-11	Series C Preferred Stock	$	C	92215	Disposed		Common Stock (28691)	Direct
2017-12-11	Series D Preferred Stock	$	C	435967	Disposed		Common Stock (135647)	Direct

Footnotes

F1: 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.

F2: Reflects shares purchased in the Issuer's initial public offering.

F3: 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.

F4: Not applicable.

F5: This transaction, which occurred prior to the Issuer's initial public offering of Common Stock, is being reported as required by Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended.

F6: Reflects the exercise of warrants to purchase Series C preferred stock on a cash basis at an exercise price of $3.3299 per share.