** Shares of electric-bus maker Proterra Inc PTRA.O fall
15.9% to $2.11 premarket
** Co posts wider Q4 loss of $81 mln vs loss of $45.1 mln
last year
** Says Q4 2022 margins were impacted by manufacturing
inefficiencies and underutilization related to parts shortages
** "Though we expect initial production inefficiencies and
underutilization at new Powered 1 factory to translate into
gross losses in the H1 of year, expect positive gross margin in
H2 of 2023," company says
** PRTA expects to report full-year 2023 revenue in a range
of $450 mln to $500 mln, up between 45% and 61% y-o-y
** PRTA fell 57.30% in 2022
(Reporting by Ashwini Raj in Bengaluru)
((Ashwini.Raj@thomsonreuters.com))