| CUSIP No. 84833T103 | 13G | Page 1 2 of 12 Pages |
EXHIBIT 2
POWER OF ATTORNEY
21 November 2017
Authorized signatures for Lundbeckfonden and Lundbeckfond Invest A/S
Signatures & Power of Attorney
The following persons are hereby authorized to sign - two in conjunction - for Lundbeckfonden (CVR no. 11814913) and Lundbeckfond Invest A/S (CVR no. 21855545) in all matters regarding our financial transactions in the ordinary course of business, including investments and other transactions in relation to Lundbeckfonden Ventures and/or Lundbeckfonden Emerge:
(1+2) or (1+3) or (1+4) as well as
(2+3) or (2+4) as well as
(3+4, save for transactions in relation to Lundbeckfonden Ventures and/or Lundbeckfonden Emerge),
| 1. Board of Trustees:(A-mandate): | ||
Jurgen Huno Rasmussen, Chairman | : /s/ Jurgen Huno Rasmussen | |
Steffen Kragh, Deputy Chairman | : /s/ Steffen Kragh | |
| 2. Management:(A-mandate): | ||
Lene Skole, Chief Executive Officer | : /s/ Lene Skole | |
| 3. Other Management:(C-mandate): | ||
Mette Kirstine Agger, Managing Partner | : /s/ Mette Kirstine Agger | |
Soren Christiansen, Vice President Finance | : /s/ Soren Christiansen | |
Christian E. Elling, Managing Partner | : /s/ Christian E. Elling | |
Bertil From, Chief Financial Officer | : /s/ Bertil From | |
| 4. Signatures together with the other management, management or Board of Trustees(B-mandate): | ||
Susanne Bjarnov Bernth, Senior Investment Controller | : /s/ Susanne Bjarnov Bernth | |
Dorthe Mathiasen, Accountant | : /s/ Dorthe Mathiasen | |
Britt Wilder, Executive Secretary | : /s/ Britt Wilder | |
This Power of Attorney replaces the Power of Attorney dated February 2017 and is valid until it is withdrawn in writing.
On behalf of Lundbeckfonden / Lundbeckfond Invest A/S
| /s/ Jørgen Huno Rasmussen | /s/ Steffen Kragh | |
| Jørgen Huno Rasmussen | Steffen Kragh | |
| Chairman of the Board of | Deputy Chairman | |
| Lundbeckfonden & | Lundbeckfonden & | |
| Lundbeckfond Invest A/S | Lundbeckfond Invest A/S |
