13G Filing: Adage Capital Management and AnaptysBio Inc (ANAB)

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Item 4. OWNERSHIP
A. Adage Capital Partners, L.P., Adage Capital Partners GP, L.L.C. and Adage Capital Advisors, L.L.C.
(a) Amount beneficially owned:  1,231,486
(b) Percent of class: 6.05%.  The percentage set forth in this Schedule 13G is calculated based upon the 20,342,484 shares of Common Stock reported to be issued and outstanding as of August 8, 2017 as reflected in the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2017 filed with the Securities and Exchange Commission on August 10, 2017.
(c) (i) Sole power to vote or direct the vote:  0
(ii) Shared power to vote or direct the vote: 1,231,486
(iii) Sole power to dispose or direct the disposition:  0
(iv) Shared power to dispose or direct the disposition of:  1,231,486
ACP has the power to dispose of and the power to vote the shares of Common Stock beneficially owned by it, which power may be exercised by its general partner, ACPGP.  ACA, as managing member of ACPGP, directs ACPGP’s operations. Neither ACPGP nor ACA directly own any shares of Common Stock.  By reason of the provisions of Rule 13d-3 of the Securities Exchange Act of 1934 (the “Act“), ACPGP and ACA may be deemed to beneficially own the shares owned by ACP.
B. Robert Atchinson and Phillip Gross
(a) Amount beneficially owned:  1,231,486
(b) Percent of class:  6.05%
(c) (i) Sole power to vote or direct the vote:  0
(ii) Shared power to vote or direct the vote:  1,231,486
(iii) Sole power to dispose or direct the disposition:  0
(iv) Shared power to dispose or direct the disposition:  1,231,486
Messrs. Atchinson and Gross, as managing members of ACA, have shared power to vote the shares of Common Stock beneficially owned by ACP.  Neither Mr. Atchinson nor Mr. Gross directly own any shares of Common Stock.  By reason of the provisions of Rule 13d-3 of the Act, each may be deemed to beneficially own the shares beneficially owned by ACP.
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.

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