Exact Sciences Corp (EXAS) Stock: D E Shaw Slightly Lowers Its Stake

Page 5 of 6 – SEC Filing

(b)	Percent of class:

	D. E. Shaw & Co., L.P.:	5.0%
	David E. Shaw:	5.0%

(c)	Number of shares to which the person has:

(i)

Sole power to vote or to direct the vote:

	D. E. Shaw & Co., L.P.:	-0- shares
	David E. Shaw:	-0- shares

(ii)

Shared power to vote or to direct the vote:

	D. E. Shaw & Co., L.P.:	5,402,130 shares
	David E. Shaw:	5,402,130 shares

(iii)

Sole power to dispose or to direct the disposition of:

	D. E. Shaw & Co., L.P.:	-0- shares
	David E. Shaw:	-0- shares

(iv)

Shared power to dispose or to direct the disposition of:

	D. E. Shaw & Co., L.P.:	5,410,030 shares
	David E. Shaw:	5,410,030 shares

David E. Shaw does not own any shares directly. By virtue of
David E. Shaw’s position as President and sole shareholder of D. E. Shaw & Co., Inc., which is the general partner of
D. E. Shaw & Co., L.P., which in turn is the manager and investment adviser of D. E. Shaw Valence Portfolios, L.L.C., the investment
adviser of D. E. Shaw Oculus Portfolios, L.L.C., and the managing member of (i) D. E. Shaw Investment Management, L.L.C. and (ii)
D. E. Shaw Advisor, L.L.C., which in turn is the investment adviser of D. E. Shaw Asymptote Portfolios, L.L.C., and by virtue of
David E. Shaw’s position as President and sole shareholder of D. E. Shaw & Co. II, Inc., which is the managing member
of D. E. Shaw & Co., L.L.C., which in turn is the manager of D. E. Shaw Oculus Portfolios, L.L.C. and the managing
member of D. E. Shaw Manager, L.L.C., which in turn is the manager of D. E. Shaw Asymptote Portfolios, L.L.C., David E. Shaw may
be deemed to have the shared power to vote or direct the vote of 5,402,130 shares, and the shared power to dispose or direct the
disposition of 5,410,030 shares, the 5,410,030 shares as described above constituting 5.0% of the outstanding shares and, therefore,
David E. Shaw may be deemed to be the beneficial owner of such shares. David E. Shaw disclaims beneficial ownership of
such 5,410,030 shares.

Item 5.	Ownership of Five Percent or Less of a Class
Not Applicable
Item 6.	Ownership of More than Five Percent on Behalf of Another Person.
Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.
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

By signing below, each of D. E. Shaw & Co., L.P.
and David E. Shaw certify that, to the best of such reporting person’s 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 are not held in connection with or as a participant in any transaction having such purposes
or effect.