** Tandem Diabetes Care TNDM.O shares down 6.9% to $26.30 i n extended trading as it looks to raise capital

** San Diego, California-based insulin pump maker announces private offering of $200 mln convertible bonds due 2032

** Co plans to use net offering proceeds for acquisitions or strategic investments, working capital, opex and capex

** It also intends to use portion of proceeds to pay cost of capped calls, derivative transactions employed to help offset dilution

** Co has about ~$1.9 bln market cap

** TNDM shares on Mon closed up 15% at $28.26, up ~29% YTD

** Stock on Fri jumped 33% after co late Thurs posted Q4 sales and adj operating income that beat LSEG estimates

** Avg rating of 24 analysts is "buy"; median PT of $26 up from $22 a month ago and $17.50 on Nov 23, per LSEG data

(Lance Tupper is a Reuters market analyst. The views expressed are his own)

((lance.tupper@tr.com 1-646-279-6380))