NextCure, Inc. — Director's Dealing 2019

May 14, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NextCure, Inc. (NXTC)
CIK: 0001661059
Period of Report: 2019-05-13

Reporting Person: SHANNON TIMOTHY M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-05-13	Common Stock	C	445866	—	Acquired	445866	Indirect
2019-05-13	Common Stock	C	743110	—	Acquired	1188976	Indirect
2019-05-13	Common Stock	C	729599	—	Acquired	1918575	Indirect
2019-05-13	Common Stock	C	285867	—	Acquired	2204442	Indirect
2019-05-13	Common Stock	P	50000	$15.00	Acquired	2254442	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-05-13	Series A-1 Preferred Stock	$	C	3582000	Disposed		Common Stock (445866)	Indirect
2019-05-13	Series A-2 Preferred Stock	$	C	5970000	Disposed		Common Stock (743110)	Indirect
2019-05-13	Series A-3 Preferred Stock	$	C	5861455	Disposed		Common Stock (729599)	Indirect
2019-05-13	Series B-1 Preferred Stock	$	C	2296605	Disposed		Common Stock (285867)	Indirect

Footnotes

F1: The reported securities automatically converted into shares of Common Stock on a 1-for-8.0338 basis upon the closing of the Issuer's initial public offering and had no expiration date.

F2: The reported securities are held directly by Canaan X L.P. (the "Canaan Fund"). The sole general partner of the Canaan Fund is Canaan Partners X LLC ("Canaan X", and together with the Canaan Fund, the "Canaan Entities"), and may be deemed to have sole voting, investment and dispositive power with respect to the shares held by the Canaan Fund. The Reporting Person, a manager and member of Canaan X, serves as the representative of the Canaan Entities on the Issuer's board of directors. The Reporting Person disclaims Section 16 beneficial ownership in the securities held by the Canaan Entities, except to the extent of his pecuniary interest therein, if any, in such securities by virtue of the limited liability company interest he owns in Canaan X.