| CUSIP No. 810648105 | 13G | Page 12 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This Power of Attorney replaces the Power of Attorney dated February 2017 and is valid until it is withdrawn in writing.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 |
