Thank you, Fusen. My remarks today will refer to GAAP results unless noted. While there continues to be headwinds across specific end markets, related to macroeconomic and industry conditions, it continues to remain an exciting time for the company. As Fusen mentioned, we are pleased to see improving order activity with higher volume customers and anticipate additional groups of customers to begin ramping for both capacity and technology needs over the near term.
During the March quarter, we generated $172.1 million of revenue and a 9.6% gross margin. Without this quarter's unique charges gross margin would have been similar to the prior quarter. During this recent quarter, we booked pre-tax charges, including impairments in the amount of $105.5 million. As you recall, we announced in March 11 that the company has anticipated pre-tax charges, including impairments relating to the cancellation of Project W to be between the low estimate of $110 million and a high estimate of $130 million. By the end of fiscal year 2024 and we expect our total charges to come in below our high estimate of $130 million.
In addition to reallocating key R&D members through in-demand projects, we prudently reduce resources, which have directly and indirectly supported Project W. We booked GAAP tax expenses of $6.4 million for the March quarter, which included tax items related to unique events during the quarter. We continue to anticipate an effective tax rate above 20% through the remainder of fiscal year 2024.
Our repurchase program remain opportunistic, and we have again increased our repurchase activity sequentially. During the March quarter, we booked $37.3 million of open market repurchases activity, which represents a sequential increase of nearly 40% over the December quarter. Although gradual, recent order activity increases expectations of broader general semiconductor end market growth. We continue to anticipate near-term headwinds within the automotive and power semiconductor end markets and also anticipate approximately $15 million of lost revenue relating to the cancellation of Project W in the second fiscal half.
Looking into the June quarter, we expect revenue of approximately $180 million, plus or minus $10 million, with gross margins of 47%. Non-GAAP operating expenses are anticipated to be $72 million plus or minus 2%, which includes additional wind down expenses of approximately $2.5 million. Collectively, for the June quarter, we expect GAAP EPS of $0.17 per share and non-GAAP EPS of $0.30 per share.
Over the coming quarters, we look forward to providing additional updates as we reach new milestones, which will help build a foundation in Memory, Dispense and Thermocompression opportunities over the coming years. This concludes our prepared comments.
Operator, please open the call for questions.