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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1438133	Tandem Diabetes Care Inc	TNDM	Surgical & Medical Instruments & Apparatus (3841)	204327508

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1582779	Dick Allen	C/O Tandem Diabetes Care, Inc., 11045 Roselle Street San Diego CA 92121		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2018-02-09	50,000	$2.00	63,160	No	4	P	Indirect	See footnotes
Common Stock	Acquisiton	2018-02-09	10,000	$2.00	13,898	No	4	P	Indirect	See footnotes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See footnotes
No	4	P	Indirect	See footnotes

Footnotes

The amount of securities beneficially owned following the reported transactions reflects the 10 for 1 reverse stock split of the Issuer's issued and outstanding common stock which was effective on October 9, 2017.
The securities are held by the Allen Family Trust dated October 12, 1981.
The securities are held by Allen Cornerstone Ventures L.P. The Reporting Person is the managing partner of Allen Cornerstone Ventures L.P. and may be deemed to have indirect beneficial ownership of such securities. The Reporting Person disclaims beneficial ownership of such securities held by Allen Cornerstone Ventures L.P., except to the extent of his proportionate pecuniary interest therein.