Filing Details

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ________)* Zosano Pharma Corp. (Name of Issuer) Common (Title of Class of Securities) 98979H103 (CUSIP Number) Clinton Ward, Chief Compliance Officer, 3290 Northside Parkway, 7th Floor, Atlanta, GA 30327 (404)881-3401 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) December 31, 2017 (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 disclosures provided in a prior cover page. 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).

CUSIP No 98979H103 13G Page 2of 5 Pages1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Atlantic Trust Group, LLC 04-3173832 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions) (a) (b) 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION DelawareNUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5. SOLE VOTING POWER 103,132 6. SHARED VOTING POWER 0 7. SOLE DISPOSITIVE POWER 103,132 8. SHARED DISPOSITIVE POWER 09. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 103,132 10. CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions) 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.23% 12.TYPE OF REPORTING PERSON (see instructions) Parent holding company or control person in accordance with Section 240.13d-1(b)(1)(ii)(G)CUSIP No.98979H103 13G Page 3 of 5 Pages Item 1. (a) Name of Issuer Zosano Pharma Corp. (b) Address of Issuer's Principal Executive Offices 34790 Ardentech Court Freemont, CA 94555 Item 2. (a) Name of Person Filing Atlantic Trust Group, LLC (b) Address of the Principal Office or, if none, residence 3290 Northside Parkway, 7th Floor, Atlanta, GA 30327 (c) Citizenship Delaware (d) Title of Class of Securities Common (e) CUSIP Number 98979H103 Item 3.If this statement is filed pursuant to section 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). (d) Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e) An investment adviser in accordance with section 240.13d-1(b)(1)(ii)(E): (f) An employee benefit plan or endowment fund in accordance with section 240.13d-1(b)(1)(ii)(F); (g)X A parent holding company or control person in accordance with section 240.13d-1(b)(1)(ii)(G); (h) A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813): (i) A church plan that is excluded from 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)Group,in accordance with section 240.13d-1(b)(1)(ii)(J).CUSIP No 98979H103 13G Page 5 of 5 Pages 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. 02/13/2018 Date /s/ Mary E. Antunes Signature Mary E. Antunes/Director, Private Wealth Compliance Name/Title