1. Title of Derivative Security (Instr. 4) |
2. Date Exercisable and Expiration Date (Month/Day/Year) |
3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) |
4. Conversion or Exercise Price of Derivative Security |
5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5) |
6. Nature of Indirect Beneficial Ownership (Instr. 5) |
Date Exercisable |
Expiration Date |
Title |
Amount or Number of Shares |
Series A Preferred Stock
|
Â
(1)
|
Â
(1)
|
Common Stock
|
1,070,771
|
$
(1)
|
I
|
See footnote
(7)
|
Series B-1 Preferred Stock
|
Â
(2)
|
Â
(2)
|
Common Stock
|
312,741
|
$
(2)
|
I
|
See footnote
(7)
|
Series B-2 Preferred Stock
|
Â
(3)
|
Â
(3)
|
Common Stock
|
260,617
|
$
(3)
|
I
|
See footnote
(7)
|
Series B-3 Preferred Stock
|
Â
(4)
|
Â
(4)
|
Common Stock
|
544,047
|
$
(4)
|
I
|
See footnote
(7)
|
Series C Preferred Stock
|
Â
(5)
|
Â
(5)
|
Common Stock
|
167,537
|
$
(5)
|
I
|
See footnote
(7)
|
Stock Purchase Warrant (Right to Buy)
|
08/01/2016 |
12/29/2022 |
Common Stock
|
28,623
(6)
|
$
8.99
|
I
|
See footnote
(7)
|
* |
If the form is filed by more than one reporting person, see Instruction 5(b)(v). |
** |
Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). |
(1) |
The Series A Preferred Stock is convertible into Common Stock on a 9.0839-for-one basis into the number of shares of Common Stock shown in Column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares have no expiration date. |
(2) |
The Series B-1 Preferred Stock is convertible into Common Stock on a 9.0839-for-one basis into the number of shares of Common Stock shown in Column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares have no expiration date. |
(3) |
The Series B-2 Preferred Stock is convertible into Common Stock on a 9.0839-for-one basis into the number of shares of Common Stock shown in Column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares have no expiration date. |
(4) |
The Series B-3 Preferred Stock is convertible into Common Stock on a 9.0839-for-one basis into the number of shares of Common Stock shown in Column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares have no expiration date. |
(5) |
The Series C Preferred Stock is convertible into Common Stock on an 9.0839-for-one basis into the number of shares of Common Stock shown in Column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares have no expiration date. |
(6) |
The warrant is currently exercisable, with an expiration date of December 29, 2022, and an exercise price of $8.99 per share. |
(7) |
The shares reported herein are held of record by S.R. One, Limited, an indirect, wholly-owned subsidiary of GlaxoSmithKline plc (the "Reporting Person"). |