** Shares of machinery manufacturer Oshkosh Corp OSK.N down nearly 9% at $140 premarket

** Co posts Q1 adjusted profit below Wall Street estimates, weighed down by weaker demand in its access and vocational segments

** First-quarter sales decline 1.4% in the access segment and fall 4.1% in the vocational segment

** Co reports adjusted profit of 85 cents per share, compared with $1.92/share from a year earlier; analysts on average expected $1.16 per share - data compiled by LSEG

** It expects 2026 adjusted profit to be in the range of $11.50/share, compared with the analysts' forecast of $11.40/share

** As of last close, stock had risen 21.8% YTD