X0306 4 2013-11-13 0 0001438133 TANDEM DIABETES CARE INC TNDM 0001340660 HLM VENTURE PARTNERS II, L.P. 222 BERKELEY STREET BOSTON MA 02116 0 0 1 0 0001591541 HLM Venture Associates II, LLC 222 BERKELEY STREET BOSTON MA 02116 0 0 1 0 0001025665 CAHILL EDWARD L C/O HLM VENTURE PARTNERS, 222 BERKELEY STREET BOSTON MA 02116 1 0 1 0 0001242813 GRUA PETER J 222 BERKELEY STREET BOSTON MA 02116 0 0 1 0 0001225960 RAY RUSSELL T 222 BERKELEY STREET BOSTON MA 02116 0 0 1 0 Common Stock 2013-11-13 4 P 0 200000 15.00 A 200000 D Shares were purchased in connection with the Issuer's initial public offering. The reported securities are owned by HLM Venture Partners II, L.P. HLM Venture Associates II, L.L.C. (the "General Partner"), and Edward L. Cahill, Peter J. Grua and Russell T. Ray, the managing members of the General Partner, may be deemed to share voting and dispositive power over the reported securities but each disclaims beneficial ownership in the securities held by HLM Venture Partners II, L.P., except to the extent of their pecuniary interest therein. /s/ David B. Berger, Attorney-in-Fact for HLM Venture Partners II, L.P. 2013-11-14 /s/ David B. Berger, Attorney-in-Fact for HLM Venture Associates II, L.L.C. 2013-11-14 /s/ David B. Berger, Attorney-in-Fact for Edward L. Cahill 2013-11-14 /s/ David B. Berger, Attorney-in-Fact for Peter J. Grua 2013-11-14 /s/ David B. Berger, Attorney-in-Fact for Russell T. Ray 2013-11-14