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 B-1 Convertible Preferred Stock
|
Â
(1)
|
Â
(1)
|
Common Stock
|
503,579
|
$
(1)
|
I
|
See Footnote
(2)
|
Series B-2 Convertible Preferred Stock
|
Â
(1)
|
Â
(1)
|
Common Stock
|
934,487
|
$
(1)
|
I
|
See Footnote
(2)
|
Series B-3 Convertible Preferred Stock
|
Â
(1)
|
Â
(1)
|
Common Stock
|
447,770
|
$
(1)
|
I
|
See Footnote
(2)
|
Stock Option (Right to Buy)
|
Â
(3)
|
03/26/2024 |
Common Stock
|
9,375
|
$
12
|
I
|
See Footnote
(4)
|
* |
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) |
Each share of convertible preferred stock is convertible into shares of common stock at any time at the holder's election or upon the consummation of a qualified public offering of the registrant on a 1-for-35 basis. The convertible preferred stock has no expiration date. |
(2) |
Held of record by S.R. One Limited, an indirect, wholly-owned subsidiary of GlaxoSmithKline plc (the "Reporting Person"). |
(3) |
The stock option becomes exercisable in equal yearly installments over three years from the date of grant, on March 26, 2014. |
(4) |
The stock option was granted to Jill Carroll, a director of the Issuer. Ms. Carroll is a senior associate of S.R. One, Limited and an employee of GlaxoSmithKline LLC, a wholly-owned subsidiary of GlaxoSmithKline plc. As an associate of S.R. One, Limited and an employee of GlaxoSmithKline LLC, Ms. Carroll is obligated to transfer any shares issued under the option to S.R. One, Limited. |