GAAP gross margin was 42% in the third quarter of 2018, compared to 40% in the second quarter of 2018 and 38% in the third quarter of 2017. The sequential and year-over-year gross margin improvement mainly reflects product and channel mix, with a higher portion of revenue coming from the higher-margin Premises segment. Sequentially, Premises segment margin improved from 55% to 57% in the third quarter of 2018.
GAAP operating expenses were $8.6 million in the third quarter of 2018, compared to $9.2 million in the second quarter of 2018 and $6.2 million in the third quarter of 2017, reflecting a sequential decrease of 6% and a year-over-year increase of 38%. The year-over-year increase in expenses was primarily due to the inclusion of 3VR operations following the acquisition in February 2018. The sequential decrease mainly reflects lower selling and marketing expenditures.
Non-GAAP operating expenses for the third quarter of 2018 were $7.2 million, compared to $7.8 million in the second quarter of 2018 and $5.2 million in the third quarter of 2017, reflecting a sequential decrease of 8% and a year-over-year increase of 37%.Non-GAAP operating expenses increased year-over-year mainly due to the inclusion of 3VR operations.
GAAP net loss totaled $0.3 million, or $(0.02) per share in the third quarter of 2018, compared to $2.7 million, or $(0.18) per share in the second quarter of 2018, and $1.0 million, or $(0.07) per share in the third quarter of 2017. Net loss in the third quarter of 2018 included restructuring and severance related charges totaling $0.2 million. The sequential improvement mainly reflects loss on extinguishment of debt recorded in the second quarter of 2018 as a result of the early repayment of outstanding term-debt.
Non-GAAP adjusted EBITDA for the third quarter of 2018 totaled $1.7 million, compared with $0.7 million in the second quarter of 2018 and $0.9 million in the third quarter of 2017.
Fiscal Year 2018 Guidance
For the fiscal year ending December 31, 2018, the Company expects revenue to be between $76 million and $78 million, andnon-GAAP adjusted EBITDA between $4.5 million and $5.0 million, tightening its previously issued guidance of revenue between $74 million and $78 million, andnon-GAAP adjusted EBITDA between $4.0 million and $5.0 million.
Management Commentary
“Following very strong growth for the Company in Q2, in the third quarter our revenue strength continued, growing 30% year-over-year.Year-to-date we also grew 30%, demonstrating the sustained nature of our growth and our market share gains, as we continue to grow substantially faster than our markets,” said Steven Humphreys, Identiv CEO. “In addition, our year-over-year growth has been broad-based, demonstrating execution on all fronts, with Premises revenue up 58%, Identity up 12%, and Credentials up 12%. This strong growth for both the quarter andyear-to-date period, coupled with our operating discipline, has resulted in sustained positive adjusted EBITDA for more than two years now.