Filing Details

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Endologix, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 292266S106 (CUSIP Number) December 31, 2016 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [X] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in 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). CUSIP No. 292266S106 SCHEDULE 13G Page 2 of 8 1 Names of Reporting Persons Tamarack Advisers, LP IRS Identification No. of Above Person (entities only) 47-4492240 2 Check the Appropriate Box if a Member of a Group (a) [ ] (See instructions) (b) [ ] 3 SEC USE ONLY 4 Citizenship or Place of Organization Delaware 5 Sole Voting Power 0 NUMBER OF 6 Shared Voting Power SHARES BENEFICIALLY 0 OWNED BY EACH REPORTING 7 Sole Dispositive Power PERSON WITH 0 8 Shared Dispositive Power 0 9 Aggregate Amount Beneficially Owned by each Reporting Person 0 10 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions) [ ] 11 Percent of Class Represented by Amount in Row 9 0% 12 Type of Reporting Person (See Instructions) IA CUSIP No. 292266S106 SCHEDULE 13G Page 3 of 8 1 Names of Reporting Persons Tamarack Capital GP, LLC IRS Identification No. of Above Person (entities only) 47-4492240 2 Check the Appropriate Box if a Member of a Group (a) [ ] (See instructions) (b) [ ] 3 SEC USE ONLY 4 Citizenship or Place of Organization Delaware 5 Sole Voting Power 0 NUMBER OF 6 Shared Voting Power SHARES BENEFICIALLY 0 OWNED BY EACH REPORTING 7 Sole Dispositive Power PERSON WITH 0 8 Shared Dispositive Power 0 9 Aggregate Amount Beneficially Owned by each Reporting Person 0 10 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions) [ ] 11 Percent of Class Represented by Amount in Row 9 0% 12 Type of Reporting Person (See Instructions) HC CUSIP No. 292266S106 SCHEDULE 13G Page 4 of 8 1 Names of Reporting Persons Justin J. Ferayorni IRS Identification No. of Above Person (entities only) ----------- 2 Check the Appropriate Box if a Member of a Group (a) [ ] (See instructions) (b) [ ] 3 SEC USE ONLY 4 Citizenship or Place of Organization United States 5 Sole Voting Power 0 NUMBER OF 6 Shared Voting Power SHARES BENEFICIALLY 0 OWNED BY EACH REPORTING 7 Sole Dispositive Power PERSON WITH 0 8 Shared Dispositive Power 0 9 Aggregate Amount Beneficially Owned by each Reporting Person 0 10 Check if the Aggregate Amount in Row (9) Excludes Certain Shares (see instructions) [ ] 11 Percent of Class Represented by Amount in Row 9 0% 12 Type of Reporting Person (See Instructions) IN CUSIP No. 292266S106 SCHEDULE 13G Page 5 of 8 Item 1(a). Name of Issuer. Endologix, Inc. Item 1(b). Address of Issuer's Principal Executive Offices. 2 Musick, Irvine, California 92618 Item 2(a). Name of Person Filing. Tamarack Advisers, LP, Tamarack Capital GP, LLC, and Justin J. Ferayorni Item 2(b). Address of Principal Business Office or, if none, Residence. The business address of Tamarack Advisers, LP, Tamarack Capital GP, LLC, and Justin J. Ferayorni is 5050 Avenida Encinas, Suite 360, Carlsbad, CA 92008. Item 2(c). Citizenship. Tamarack Advisers, LP is a Delaware limited Partnership, Tamarack Capital GP, LLC is a Delaware limited liability company, and Justin J. Ferayorni is a United States citizen. Item 2(d). Title of Class of Securities. Common Stock Item 2(e). CUSIP Number. 292266S106 Item 3. If this statement is filed pursuant to 240.13d- 1(b) or 240.13d-2(b) or (c), check whether the person filing is a: (a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o). (b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c). (c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c). CUSIP No. 292266S106 SCHEDULE 13G Page 6 of 8 (d) [ ] Investment company registered under section 8 of the Investment Company act of 1940 (15 U.S.C. 80a-8). (e) [X] An investment adviser in accordance with 240.13d- 1(b)(1)(ii)(E). (for Tamarack Advisers, LP) (f) [ ] An employee benefit plan or endowment fund in accordance with 240.13d-1(b)(1)(ii)(F). (g) [X] A parent holding company or control person in accordance with 240.13d-1(b)(1)(ii)(G). (for Tamarack Capital GP, LLC and Mr. Ferayorni) (h) [ ] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813). (i) [ ] A church plan that is excluded form the definition of an investment company under section 3(c)(14) of the Investment Company act of 1940 (15 U.S.C. 80a-3). (j) [ ] A non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J); (K) [ ] Group, in accordance with 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ______ Item 4. Ownership. Reference is hereby made to Items 5-9 and 11 of pages two (2), three(3), and four(4) of this Schedule 13G, which Items are incorporated by reference herein. 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 person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [x]. CUSIP No. 292266S106 SCHEDULE 13G Page 7 of 8 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, Justin J. Ferayorni certifies that, to the best of his knowledge and belief, the securities referred to above on page two (2) of this Schedule 13G were acquired and are held in the ordinary course of business and 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 that purpose or effect. CUSIP No. 292266S106 SCHEDULE 13G Page 8 of 8 Signature After reasonable inquiry and to the best of his knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. DATED: February 8, 2017 Tamarack Advisers, LP /s/ Justin J. Ferayorni ________________________ By: Justin J. Ferayorni its: Managing Member of its General Partner Tamarack Capital GP, LLC /s/ Justin J. Ferayorni ________________________ By: Justin J. Ferayorni its: Managing Member Justin J. Ferayorni /s/ Justin J. Ferayorni ________________________ By: Justin J. Ferayorni Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001)