Thorp Clay

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 33

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 0

Underlying: Common Stock · 149,320 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 32

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 0

Underlying: Common Stock · 94,874 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 31

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 0

Underlying: Common Stock · 1,044,764 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 30

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 0

Underlying: Common Stock · 13,609 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 29

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 0

Underlying: Common Stock · 174,699 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 28

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Catalysta Ventures, LLC

Disclosed balance after: 0

Underlying: Common Stock · 4,846 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F2 · ownership.nature: Catalysta Ventures, LLC ("Catalysta") is the general partner of Hatteras Venture Partners I, LP ("HVP I"). The securities held directly by HVP I are indirectly held by Catalysta. The reporting person is a manager of Catalysta and may be deemed to share voting and dispositive power with regard to the securities held directly by Catalysta and HVP I. The reporting person disclaims beneficial ownership of the securities held by Catalysta and HVP I except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 27

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 0

Underlying: Common Stock · 3,862 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 26

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 0

Underlying: Common Stock · 42,530 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 25

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners I, LP

Disclosed balance after: 0

Underlying: Common Stock · 52,690 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F2 · ownership.nature: Catalysta Ventures, LLC ("Catalysta") is the general partner of Hatteras Venture Partners I, LP ("HVP I"). The securities held directly by HVP I are indirectly held by Catalysta. The reporting person is a manager of Catalysta and may be deemed to share voting and dispositive power with regard to the securities held directly by Catalysta and HVP I. The reporting person disclaims beneficial ownership of the securities held by Catalysta and HVP I except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 24

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Venture Capital Multiplier Fund

Disclosed balance after: 40,420

Underlying: Common Stock · 994 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 23

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Venture Capital Multiplier Fund

Disclosed balance after: 41,414

Underlying: Common Stock · 41,414 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 22

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Venture Capital Multiplier Fund

Disclosed balance after: 0

Underlying: Series C-1 Preferred Stock · 41,414 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F5 · derivative.exercise_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F5 · derivative.expiration_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F1 · derivative.underlying: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 21

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 13,558

Underlying: Common Stock · 104 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 20

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 13,662

Underlying: Common Stock · 4,309 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 19

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 0

Underlying: Series C-1 Preferred Stock · 4,309 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F5 · derivative.exercise_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F5 · derivative.expiration_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F1 · derivative.underlying: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 18

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 149,320

Underlying: Common Stock · 1,139 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 17

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 150,459

Underlying: Common Stock · 47,458 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 16

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 0

Underlying: Series C-1 Preferred Stock · 47,458 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F5 · derivative.exercise_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F5 · derivative.expiration_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F1 · derivative.underlying: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 15

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 94,874

Underlying: Common Stock · 42 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 14

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 94,916

Underlying: Common Stock · 1,731 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 13

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 0

Underlying: Series B Preferred Stock · 1,731 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F5 · derivative.exercise_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F5 · derivative.expiration_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F1 · derivative.underlying: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 12

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 1,044,764

Underlying: Common Stock · 458 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 11

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 1,045,222

Underlying: Common Stock · 19,061 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F1 · derivative.expiration_date: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · derivative · entry 10

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 0

Underlying: Series B Preferred Stock · 19,061 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: Represents the net exercise of the warrants immediately prior to, and contingent upon, the closing of the Issuer's initial public offering.

F5 · derivative.exercise_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F5 · derivative.expiration_date: The warrants were exercisable until, and were scheduled to expire upon, the closing of the Issuer's initial public offering.

F1 · derivative.underlying: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 9

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Venture Capital Multiplier Fund

Disclosed balance after: 416,481

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 8

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Venture Capital Multiplier Fund

Disclosed balance after: 266,481

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 7

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Catalysta Ventures, LLC

Disclosed balance after: 4,846

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F2 · ownership.nature: Catalysta Ventures, LLC ("Catalysta") is the general partner of Hatteras Venture Partners I, LP ("HVP I"). The securities held directly by HVP I are indirectly held by Catalysta. The reporting person is a manager of Catalysta and may be deemed to share voting and dispositive power with regard to the securities held directly by Catalysta and HVP I. The reporting person disclaims beneficial ownership of the securities held by Catalysta and HVP I except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 6

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 163,099

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 5

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Affiliates III, LP

Disclosed balance after: 150,612

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 4

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 1,820,933

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 3

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners III, LP

Disclosed balance after: 1,683,420

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F3 · ownership.nature: Hatteras Venture Advisors III, LLC ("HVA III") is the general partner of Hatteras Venture Partners III, LP ("HVP III"), Hatteras Venture Affiliates III, LP ("HV Affiliates") and Venture Capital Multiplier Fund ("Multiplier Fund"). The securities held directly by HVP III, HV Affiliates and Multiplier Fund are indirectly held by HVA III. The reporting person is a manager of HVA III and may be deemed to share voting and dispositive power with regard to the securities directly held by HVP III, HV Affiliates and Multiplier Fund. The reporting person disclaims beneficial ownership of the securities held by HVP III, HV Affiliates and Multiplier Fund except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-056051 · doc4.xml · nonDerivative · entry 2

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Hatteras Venture Partners I, LP

Disclosed balance after: 52,690

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of Preferred Stock converted into Common Stock on a one-for-one basis upon the closing of the Issuer's initial public offering and has no expiration date.

F2 · ownership.nature: Catalysta Ventures, LLC ("Catalysta") is the general partner of Hatteras Venture Partners I, LP ("HVP I"). The securities held directly by HVP I are indirectly held by Catalysta. The reporting person is a manager of Catalysta and may be deemed to share voting and dispositive power with regard to the securities held directly by Catalysta and HVP I. The reporting person disclaims beneficial ownership of the securities held by Catalysta and HVP I except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-038988 · doc4.xml · derivative · entry 1

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,250

Underlying: Common Stock · 11,250 shares

Expires 2028-06-19

F1 · derivative.exercise_date: The shares underlying this option vest in full on the earlier of the Issuer's next annual meeting of stockholders or June 20, 2019.

SEC source: 0001209191-18-034839 · doc4.xml · nonDerivative · entry 2

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,237,711

F1 · ownership.nature: Following the reported transaction, in which none of the reportable securities owned directly by Hatteras Venture Advisors V, LLC ("HVA V") were sold, 995 shares of the reportable securities are owned directly by HVA V. The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F4 · ownership.nature: Following the reported transaction, 168,754 shares of the reportable securities are owned directly by Hatteras NC.

F5 · ownership.nature: Following the reported transaction, in which none of the reportable securities owned directly by HVP IV were sold, 3,067,962 shares of the reportable securities are owned directly by HVP IV.

SEC source: 0001209191-18-034839 · doc4.xml · nonDerivative · entry 1

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,279,421

F1 · ownership.nature: Following the reported transaction, in which none of the reportable securities owned directly by Hatteras Venture Advisors V, LLC ("HVA V") were sold, 995 shares of the reportable securities are owned directly by HVA V. The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F2 · ownership.nature: Following the reported transaction, 3,067,962 shares of the reportable securities are owned directly by Hatteras Venture Partners IV SBIC, LP ("HVP IV"). Hatteras Venture Advisors IV SBIC, LLC ("HVA IV SBIC") is the general partner of HVP IV. The securities directly held by HVP IV are indirectly held by the individual managing members of HVA IV SBIC (each, a "GP Managing Member" and collectively, the "GP Managing Members"). The GP Managing Members are John Crumpler, Clay Thorp, Ken Lee, Douglas Reed and Robert Ingram. The GP Managing Members may share voting and dispositive power over the securities directly held by HVP IV. Each GP Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any GP Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

F3 · ownership.nature: Following the reported transaction, in which none of the reportable securities owned directly by Hatteras NC Fund, LP ("Hatteras NC") were sold, 210,464 shares of the reportable securities are owned directly by Hatteras NC. Hatteras Venture Advisors IV, LLC ("HVA IV") is the general partner of Hatteras NC. The securities directly held by Hatteras NC are indirectly held by the individual managing members of HVA IV (each, a "HVA IV Managing Member"). The HVA IV Managing Members are John Crumpler, Clay Thorp, Ken Lee, Douglas Reed and Robert Ingram. The HVA IV Managing Members may share voting and dispositive power over the securities directly held by HVP IV. Each HVA IV Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any HVA IV Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 8

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,037,711

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F12 · ownership.nature: Following the reported transaction, 3,826,252 shares of the reportable securities are owned directly by HVP IV.

F13 · ownership.nature: Following the reported transaction, 210,464 shares of the reportable securities are owned directly by Hatteras NC.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 7

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,037,737

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F11 · ownership.nature: Following the reported transaction, 210,490 shares of the reportable securities are owned directly by Hatteras NC.

F12 · ownership.nature: Following the reported transaction, 3,826,252 shares of the reportable securities are owned directly by HVP IV.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 6

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,038,211

F9 · price: The price represents the weighted average price with a low of $50.50 and a high of $51.25.

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F10 · ownership.nature: Following the reported transaction, 3,826,726 shares of the reportable securities are owned directly by HVP IV.

F11 · ownership.nature: Following the reported transaction, 210,490 shares of the reportable securities are owned directly by Hatteras NC.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 5

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,038,519

F9 · price: The price represents the weighted average price with a low of $50.50 and a high of $51.25.

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F8 · ownership.nature: Following the reported transaction, 210,798 shares of the reportable securities are owned directly by Hatteras NC.

F10 · ownership.nature: Following the reported transaction, 3,826,726 shares of the reportable securities are owned directly by HVP IV.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 4

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,044,111

F6 · price: The price represents the weighted average price with a low of $52.12 and a high of $52.14.

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F7 · ownership.nature: Following the reported transaction, 3,832,318 shares of the reportable securities are owned directly by HVP IV.

F8 · ownership.nature: Following the reported transaction, 210,798 shares of the reportable securities are owned directly by Hatteras NC.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 3

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,044,137

F6 · price: The price represents the weighted average price with a low of $52.12 and a high of $52.14.

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F5 · ownership.nature: Following the reported transaction, 210,824 shares of the reportable securities are owned directly by Hatteras NC.

F7 · ownership.nature: Following the reported transaction, 3,832,318 shares of the reportable securities are owned directly by HVP IV.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 2

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,044,611

F1 · price: The price represents the weighted average price with a low of $51.00 and a high of $51.755. The Reporting Persons undertake to provide G1 Therapeutics, Inc., any security holder of G1 Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote 1 to this Form 4.

F2 · ownership.nature: Following the reported transaction, 3,832,792 shares of the reportable securities are owned directly by Hatteras Venture Partners IV SBIC, LP ("HVP IV"). Hatteras Venture Advisors IV SBIC, LLC ("HVA IV SBIC") is the general partner of HVP IV. The securities directly held by HVP IV are indirectly held by the individual managing members of HVA IV SBIC (each, a "GP Managing Member" and collectively, the "GP Managing Members"). The GP Managing Members are John Crumpler, Clay Thorp, Ken Lee, Douglas Reed and Robert Ingram. The GP Managing Members may share voting and dispositive power over the securities directly held by HVP IV. Each GP Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any GP Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

F5 · ownership.nature: Following the reported transaction, 210,824 shares of the reportable securities are owned directly by Hatteras NC.

SEC source: 0001209191-18-032789 · doc4.xml · nonDerivative · entry 1

Thorp Clay · CIK 0001592380 · 10% owner

Hatteras Venture Advisors IV SBIC, LLC · CIK 0001675236 · 10% owner

Hatteras Venture Partners IV SBIC, LP · CIK 0001675232 · 10% owner

INGRAM ROBERT ALEXANDER · CIK 0001219890 · 10% owner

Crumpler John · CIK 0001674107 · 10% owner

LEE KENNETH B JR · CIK 0001208570 · 10% owner

Reed Douglas MD · CIK 0001291262 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 4,046,206

F1 · price: The price represents the weighted average price with a low of $51.00 and a high of $51.755. The Reporting Persons undertake to provide G1 Therapeutics, Inc., any security holder of G1 Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote 1 to this Form 4.

F2 · ownership.nature: Following the reported transaction, 3,832,792 shares of the reportable securities are owned directly by Hatteras Venture Partners IV SBIC, LP ("HVP IV"). Hatteras Venture Advisors IV SBIC, LLC ("HVA IV SBIC") is the general partner of HVP IV. The securities directly held by HVP IV are indirectly held by the individual managing members of HVA IV SBIC (each, a "GP Managing Member" and collectively, the "GP Managing Members"). The GP Managing Members are John Crumpler, Clay Thorp, Ken Lee, Douglas Reed and Robert Ingram. The GP Managing Members may share voting and dispositive power over the securities directly held by HVP IV. Each GP Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any GP Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

F3 · ownership.nature: Following the reported transaction, 212,419 shares of the reportable securities are owned directly by Hatteras NC Fund, LP ("Hatteras NC"). Hatteras Venture Advisors IV, LLC ("HVA IV") is the general partner of Hatteras NC Fund, LP. The securities directly held by Hatteras NC are indirectly held by the individual managing members of HVA IV (each, a "HVA IV Managing Member" and collectively, the "HVA IV Managing Members"). The HVA IV Managing Members are John Crumpler, Clay Thorp, Ken Lee, Douglas Reed and Robert Ingram. The HVA IV Managing Members may share voting and dispositive power over the securities directly held by HVP IV. Each HVA IV Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any HVA IV Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

F4 · ownership.nature: 995 shares of the reportable securities are owned directly by Hatteras Venture Advisors V, LLC ("HVA V"). The securities directly held by HVA V are indirectly held by the individual managing members of HVA V (each, a "Managing Member" and collectively, the "Managing Members"). The Managing Members are John Crumpler, Clay Thorp, Christy Shaffer, Douglas Reed and Robert Ingram. The Managing Members may share voting and dispositive power over the securities directly held by HVA V. Each Managing Member disclaims beneficial ownership of these securities and this report is not an admission that any Managing Member is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his or her pecuniary interest therein.

SEC source: 0001209191-18-031802 · doc4.xml · nonDerivative · entry 2

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,466,394

F5 · shares: Consists of (i) 1,737 shares sold by Hatteras NC, (ii) 23,497 shares sold by HVP III, (iii) 2,108 shares sold by HVA III, (iv) 3,791 shares sold by HVP IV and (v) 30,006 shares sold by HVP IV SBIC.

F6 · price: This transaction was executed in multiple trades at prices ranging from $12.97 to $13.41, inclusive. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F3 · ownership.nature: The reporting person is one of the general partners of: (i) Hatteras Venture Advisors III, LLC, the general partner of HVP III and HVA III; (ii) Hatteras Venture Advisors IV SBIC, LLC, the general partner of HVP IV SBIC; and (iii) Hatteras Venture Advisors IV, LLC, the general partner of HVP IV and Hatteras NC. HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC are the record holders of the securities, and the reporting person may be deemed to share voting and dispositive power over the securities held by HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC.

F4 · ownership.nature: The reporting person disclaims beneficial ownership of these securities and this report is not an admission that the reporting person is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-031802 · doc4.xml · nonDerivative · entry 1

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,527,533

F1 · shares: Consists of (i) 3,000 shares sold by Hatteras NC Fund, LP ("Hatteras NC"), (ii) 38,300 shares sold by Hatteras Venture Partners III, LP ("HVP III"), (iii) 3,500 shares sold by Hatteras Venture Affiliates III, LP ("HVA III"), (iv) 6,200 shares sold by Hatteras Venture Partners IV, LP ("HVP IV") and (v) 49,000 shares sold by Hatteras Venture Partners IV SBIC, LP ("HVP IV SBIC").

F2 · price: This transaction was executed in multiple trades at prices ranging from $12.23 to $13.37, inclusive. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F3 · ownership.nature: The reporting person is one of the general partners of: (i) Hatteras Venture Advisors III, LLC, the general partner of HVP III and HVA III; (ii) Hatteras Venture Advisors IV SBIC, LLC, the general partner of HVP IV SBIC; and (iii) Hatteras Venture Advisors IV, LLC, the general partner of HVP IV and Hatteras NC. HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC are the record holders of the securities, and the reporting person may be deemed to share voting and dispositive power over the securities held by HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC.

F4 · ownership.nature: The reporting person disclaims beneficial ownership of these securities and this report is not an admission that the reporting person is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-021497 · doc4.xml · nonDerivative · entry 3

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,627,533

F7 · shares: Consists of (i) 154 shares sold by Hatteras NC, (ii) 2,006 shares sold by HVP III, (iii) 182 shares sold by HVA III, (iv) 324 shares sold by HVP IV and (v) 2,565 shares sold by HVP IV SBIC.

F8 · price: This transaction was executed in multiple trades at prices ranging from $12.00 to $12.10, inclusive. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F3 · ownership.nature: The reporting person is one of the general partners of: (i) Hatteras Venture Advisors III, LLC, the general partner of HVP III and HVA III; (ii) Hatteras Venture Advisors IV SBIC, LLC, the general partner of HVP IV SBIC; and (iii) Hatteras Venture Advisors IV, LLC, the general partner of HVP IV and Hatteras NC. HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC are the record holders of the securities, and the reporting person may be deemed to share voting and dispositive power over the securities held by HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC.

F4 · ownership.nature: The reporting person disclaims beneficial ownership of these securities and this report is not an admission that the reporting person is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-021497 · doc4.xml · nonDerivative · entry 2

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,632,764

F5 · shares: Consists of (i) 989 shares sold by Hatteras NC, (ii) 12,897 shares sold by HVP III, (iii) 1,170 shares sold by HVA III, (iv) 2,085 shares sold by HVP IV and (v) 16,489 shares sold by HVP IV SBIC.

F6 · price: This transaction was executed in multiple trades at prices ranging from $12.00 to $12.21, inclusive. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F3 · ownership.nature: The reporting person is one of the general partners of: (i) Hatteras Venture Advisors III, LLC, the general partner of HVP III and HVA III; (ii) Hatteras Venture Advisors IV SBIC, LLC, the general partner of HVP IV SBIC; and (iii) Hatteras Venture Advisors IV, LLC, the general partner of HVP IV and Hatteras NC. HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC are the record holders of the securities, and the reporting person may be deemed to share voting and dispositive power over the securities held by HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC.

F4 · ownership.nature: The reporting person disclaims beneficial ownership of these securities and this report is not an admission that the reporting person is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

SEC source: 0001209191-18-021497 · doc4.xml · nonDerivative · entry 1

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,666,394

F1 · shares: Consists of (i) 2,940 shares sold by Hatteras NC Fund, LP ("Hatteras NC"), (ii) 38,350 shares sold by Hatteras Venture Partners III, LP ("HVP III"), (iii) 3,480 shares sold by Hatteras Venture Affiliates III, LP ("HVA III"), (iv) 6,200 shares sold by Hatteras Venture Partners IV, LP ("HVP IV") and (v) 49,030 shares sold by Hatteras Venture Partners IV SBIC, LP ("HVP IV SBIC").

F2 · price: This transaction was executed in multiple trades at prices ranging from $12.00 to $12.49, inclusive. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F3 · ownership.nature: The reporting person is one of the general partners of: (i) Hatteras Venture Advisors III, LLC, the general partner of HVP III and HVA III; (ii) Hatteras Venture Advisors IV SBIC, LLC, the general partner of HVP IV SBIC; and (iii) Hatteras Venture Advisors IV, LLC, the general partner of HVP IV and Hatteras NC. HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC are the record holders of the securities, and the reporting person may be deemed to share voting and dispositive power over the securities held by HVP III, HVA III, HVP IV SBIC, HVP IV and Hatteras NC.

F4 · ownership.nature: The reporting person disclaims beneficial ownership of these securities and this report is not an admission that the reporting person is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

SEC source: 0001209191-17-064491 · doc4.xml · nonDerivative · entry 3

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,766,394

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the record holders of the securities on June 12, 2017.

F8 · shares: Consists of (i) 4,584 shares sold by HVP III and (ii) 416 shares sold by HVA III.

F9 · price: This transaction was executed in multiple trades at prices ranging from $5.85 to $6.35, inclusive. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F4 · ownership.nature: The reporting person is one of the general partners of: (i) Hatteras Venture Advisors III, LLC, the general partner of HVP III and HVA III; (ii) Hatteras Venture Advisors IV SBIC, LLC, the general partner of Hatteras Venture Partners IV SBIC, LP; and (iii) Hatteras Venture Advisors IV, LLC, the general partner of Hatteras Venture Partners IV, LP and Hatteras NC Fund, LP. HVP III, HVA III, Hatteras Venture Partners IV SBIC, LP, Hatteras Venture Partners IV, LP and Hatteras NC Fund, LP are the record holders of the securities, and the reporting person may be deemed to share voting and dispositive power over the securities held by HVP III, HVA III, Hatteras Venture Partners IV SBIC, LP, Hatteras Venture Partners IV, LP and Hatteras NC Fund, LP.

F5 · ownership.nature: The reporting person disclaims beneficial ownership of these securities and this report is not an admission that the reporting person is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.

SEC source: 0001209191-17-064491 · doc4.xml · nonDerivative · entry 2

Thorp Clay · CIK 0001592380 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 3,771,394

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the record holders of the securities on June 12, 2017.

F6 · shares: Consists of (i) 13,751 shares sold by HVP III and (ii) 1,249 shares sold by HVA III.

F7 · price: This transaction was executed in multiple trades at prices ranging from $5.93 to $6.26, inclusive. The price reported in Column 4 is a weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transactions were effected.

F4 · ownership.nature: The reporting person is one of the general partners of: (i) Hatteras Venture Advisors III, LLC, the general partner of HVP III and HVA III; (ii) Hatteras Venture Advisors IV SBIC, LLC, the general partner of Hatteras Venture Partners IV SBIC, LP; and (iii) Hatteras Venture Advisors IV, LLC, the general partner of Hatteras Venture Partners IV, LP and Hatteras NC Fund, LP. HVP III, HVA III, Hatteras Venture Partners IV SBIC, LP, Hatteras Venture Partners IV, LP and Hatteras NC Fund, LP are the record holders of the securities, and the reporting person may be deemed to share voting and dispositive power over the securities held by HVP III, HVA III, Hatteras Venture Partners IV SBIC, LP, Hatteras Venture Partners IV, LP and Hatteras NC Fund, LP.

F5 · ownership.nature: The reporting person disclaims beneficial ownership of these securities and this report is not an admission that the reporting person is a beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein.