13G Filing: Sabby Capital and Tandem Diabetes Care Inc (TNDM)

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Tandem Diabetes Care Inc (NASDAQ:TNDM): Hal Mintz’s Sabby Capital filed an amended 13D.

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You can access the original SEC filing by clicking here.

Ownership Summary Table

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
Sabby Volatility Warrant Master Fund, Ltd 0 570,000 0 570,000 570,000 5.63 12. TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) CO CUSIP No. 875372104 1. NAME OF REPORTING PERSONS Sabby Management, LLC 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) (b) X 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION Delaware, USA NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5. SOLE VOTING POWER 0 6. SHARED VOTING POWER 570,000 7. SOLE DISPOSITIVE POWER 0 8. SHARED DISPOSITIVE POWER 570,000 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 570,000 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.63 12. TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) OO CUSIP No. 875372104 1. NAME OF REPORTING PERSONS Hal Mintz 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) (b) X 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION USA NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5. SOLE VOTING POWER 0 6. SHARED VOTING POWER 570,000 7. SOLE DISPOSITIVE POWER 0 8. SHARED DISPOSITIVE POWER 570,000 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 570,000 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.63 12. TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) IN CUSIP No. 875372104 Item 1. (a). Name of Issuer Tandem Diabetes Care, Inc. (b). Address of issuer s principal executive offices 11045 Roselle Street Suite 200 San Diego CA 92121 Item 2. (a). Name of person filing Sabby Volatility Warrant Master Fund, Ltd. Sabby Management, LLC Hal Mintz (b). Address or principal business office or, if none, residence Sabby Volatility Warrant Master Fund, Ltd. c o Ogier Fiduciary Services (Cayman) Limited 89 Nexus Way, Camana Bay Grand Cayman KY1-9007 Cayman Islands Sabby Management, LLC 10 Mountainview Road, Suite 205 Upper Saddle River, New Jersey 07458 Hal Mintz c o Sabby Management, LLC 10 Mountainview Road, Suite 205 Upper Saddle River, New Jersey 07458 (c). Citizenship Sabby Volatility Warrant Master Fund, Ltd. – Cayman Islands Sabby Management, LLC – Delaware, USA Hal Mintz – USA (d). Title of class of securities Common stock (the Common Stock) (e). CUSIP No. 875372104 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) A parent holding company or control person in accordance with Section 240.13d-1(b)(1)(ii)(G) (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 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) A non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J) (k) Group, in accordance with Section 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Section 240.13d-1(b)(1)(ii)(J), please specify the type of institution Item 4. Ownership. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned Sabby Volatility Warrant Master Fund, Ltd. – 570,000 Sabby Management, LLC – 570,000 Hal Mintz – 570,000 (b) Percent of class Sabby Volatility Warrant Master Fund, Ltd. – 5.63%
Sabby Management 0 570,000 0 570,000 570,000
Hal Mintz 0 570,000 0 570,000 570,000

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Page 1 of 7 – SEC Filing

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No.________)*

Tandem Diabetes Care, Inc.
(Name of Issuer)

Common Stock
(Title of Class of Securities)

875372104
(CUSIP Number)

October 13, 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:
[_] Rule 13d-1(b)

[X] 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.
875372104

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