IPG Photonics (IPGP) to Post Q4 Earnings: What to Expect? Posted byZacks Equity Research February 11, 2022 Leave a comment on IPG Photonics (IPGP) to Post Q4 Earnings: What to Expect? IPG Photonics’ (IPGP) fourth-quarter 2021 results are likely to reflect momentum in new end-markets amid sluggishness in the China market and supply-chain issues.