13G Filing: Viking Global and Editas Medicine, Inc. (EDIT)

Schedule 13G PAGE 19 of 20

CUSIP No. 28106W103

K. O. Andreas Halvorsen, David C. Ott and
Daniel S. Sundheim
(a) Amount beneficially owned: 2,729,808
(b) Percent of class: 7.5%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote
0
(ii) shared power to vote or to direct the vote
2,729,808
(iii) sole power to dispose or to direct the disposition
of 0
(iv) shared power to dispose or to direct the disposition
of 2,729,808

Messrs. Halvorsen, Ott and Sundheim, as
Executive Committee Members of VGI, VGP, VLFGP and Opportunities GP,
have shared authority to dispose of and vote the shares of
Common Stock beneficially owned by VGI, VGP, VLFGP and Opportunities GP.
None of Messrs. Halvorsen, Ott and Sundheim directly
owns any shares of Common Stock.

Based on Rule 13d-3 of the Act, each may be deemed to beneficially
own the shares of Common Stock directly held by VGE, VGE II,
VGEIII, VLFM and Opportunities Fund.

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
If this statement is being filed to report the fact that as of the
date hereof the Reporting Persons has ceased to be the beneficial
owner of more than five percent of the class of securities,
check the following.[]

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
Yes, see Item 4.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.
Not applicable.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
Not applicable.

ITEM 9. NOTICE OF DISSOLUTION OF GROUP.
Not applicable.

ITEM 10. CERTIFICATION. (if filing pursuant to Rule 13d-1(c))
By signing below each Reporting Person certifies that, to the best
of its knowledge and belief, the securities referred to above were not
acquired and are not held for the purpose of or with the effect of
changing or influencing the control of the issuer of the securities
and were not acquired and not held in connection with or as a
participant in any transaction having that purpose or effect.