If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box. [ ]

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

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The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

This Amendment No. 2 ("Amendment No. 2") amends and supplements the statement on Schedule 13D filed with the Securities and Exchange Commission (the "SEC") on November 20, 2017 (the "Original Schedule 13D") and Amendment No. 1 filed with the SEC on January 25, 2018 ("Amendment No. 1", and together with Original Schedule 13D and this Amendment No. 2, the "Schedule 13D") with respect to the shares ("Shares") of common stock, par value $0.01 per share, of Bloomin' Brands, Inc., a Delaware corporation (the "Issuer"). Capitalized terms used herein and not otherwise defined in this Amendment No. 2 shall have the meanings set forth in the Schedule 13D. This Amendment No. 2 amends Items 2, 3, 4, 5, 6 and 7.

As a result of the Cooperation Agreement (as defined in Item 4 of this Amendment No. 2), the Reporting Person (as defined below), Glenn K. Murphy and Neal J. Yanofsky are no longer deemed to be a “group” for purposes of Section 13(d)(3) of the Exchange Act and Rule 13d-5(b)(1) promulgated thereunder. Therefore, the beneficial ownership reported in this Amendment No. 2 no longer includes the beneficial ownership of Mr. Murphy or Mr. Yanofsky.

Item 2 of the Schedule 13D is hereby amended and restated in its entirety as follows:

(a) This statement is filed by JANA Partners LLC, a Delaware limited liability company (the “Reporting Person”). The Reporting Person is a private money management firm which holds Shares of the Issuer in various accounts under its management and control. The principal owner of the Reporting Person is Barry Rosenstein (the “Principal”).

(b) The principal business address of the Reporting Person and the Principal is 767 Fifth Avenue, 8th Floor, New York, NY 10153.

(c) The principal business of the Reporting Person and the Principal is investing for accounts under their management.

(d) Neither the Reporting Person nor the Principal has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) Neither the Reporting Person nor the Principal has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f) The Reporting Person is a limited liability company organized in Delaware. The Principal is a United States citizen.

Item 3 of the Schedule 13D is hereby amended and restated in its entirety as follows:

The 7,929,638 Shares reported herein by the Reporting Person were acquired at an aggregate purchase price of approximately $136.5 million. Such Shares were acquired with investment funds in accounts managed by the Reporting Person and margin borrowings described in the following sentence. Such Shares are held by the investment funds managed by the Reporting Person in commingled margin,

accounts which may extend margin credit to the Reporting Person from time to time, subject to applicable federal margin regulations, stock exchange rules and credit policies. In such instances, the positions held in the margin accounts are pledged as collateral security for the repayment of debit balances in the account. The margin accounts bear interest at a rate based upon the broker's call rate from time to time in effect. Because other securities are held in the margin accounts, it is not possible to determine the amounts, if any, of margin used to purchase the Shares reported herein.

Item 4 of the Schedule 13D is hereby amended and supplemented by the addition of the following:

On February 28, 2018, the Reporting Person entered into a cooperation agreement with the Issuer (the "Cooperation Agreement") and issued a joint press release with the Issuer announcing the Cooperation Agreement and certain of its material terms (the "Press Release"). The full text of the Cooperation Agreement and Press Release are included as Exhibit E and Exhibit F, respectively, to this Amendment No. 2 by reference to Exhibits 10.1 and 99.1 of the Issuer's Current Report on Form 8-K filed with the SEC on February 28, 2018 (the "Form 8-K") and is incorporated by reference herein.

Items 5(a), (b), (c) and (d) of the Schedule 13D are hereby amended and restated in their entirety as follows:

(a) The aggregate percentage of Shares reported to be beneficially owned by the Reporting Persons is based upon 91,913,000 Shares outstanding as of December 31, 2017, as reported in Exhibit 99.1 of the Issuer's Current Report on Form 8-K filed with the Securities and Exchange Commission on February 22, 2018.

As of the close of business on the date hereof, the Reporting Person may be deemed to beneficially own 7,929,638 Shares, representing approximately 8.6% of the Shares outstanding.

By virtue of the Cooperation Agreement the Reporting Person, Mr. Murphy and Mr. Yanofsky are no longer deemed to be a “group” for purposes of Section 13(d)(3) of the Exchange Act and Rule 13d-5(b)(1) promulgated thereunder. As a result, this Amendment No. 2 only reports the beneficial ownership of the Reporting Person.

(b) The Reporting Person has sole voting and dispositive power over 7,929,638 Shares, which power is exercised by the Principal.

(c) There were no transactions in the Shares effected by the Reporting Person since Amendment No. 1.

(d) No person (other than the Reporting Person) is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Shares.

Item 6 of the Schedule 13D is hereby amended and supplemented as follows:

On February 28, 2018, the Issuer and the Reporting Person entered into the Cooperation Agreement. A copy of such agreement is attached as Exhibit E to this Amendment No. 2 and is incorporated by reference herein.

Item 7 of the Schedule 13D is hereby amended and supplemented as follows:

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 28, 2018