NEW YORK (AP) -- Shares of Super Micro Computer plunged more than 30% Wednesday morning, after the server maker disclosed that Ernst & Young had resigned as its public accounting firm.

According to a regulatory filing from Super Micro, EY resigned while conducting an audit for the tech company's most recent fiscal year. The accounting firm communicated concerns in July over issues like transparency and internal control related to financial reporting, Wednesday's report notes, later prompting Super Micro's board to enlist a review.

Additional information received during this review then led EY to raise questions about whether Super Micro "demonstrates a commitment to integrity and ethical values," the company added, as well as transparency and oversight independent of the CEO and other management.

The Associated Press reached out to EY for statement Wednesday. Super Micro's regulatory filing notes that EY's resignation letter stated, in part, that it was "no longer be able to rely" on representations from the company's management and audit committee -- and concluded it could no longer provide audit services "in accordance with applicable law or professional obligations."

EY sent its resignation letter last week, per Wednesday's filing. The audit would've been the firm's first on Super Micro's behalf.

Super Micro noted that it disagreed with EY's resignation, but recognized the decision was final. The company added that it "has taken the concerns expressed by EY seriously" and its review is ongoing.

The accounting firm's resignation arrives just two months after short-selling firm Hindenburg Research released a report alleging ample accounting manipulation at Super Micro, pointing to "glaring accounting red flags" and evidence of undisclosed transactions. It also accused Super Micro of rehiring top executives that were directly involved in a 2018 scandal. At the time of August's report, Super Micro said it would not comment "on rumors and speculation."

In 2020, the Securities and Exchange Commission charged Super Micro with improper accounting for "prematurely recognizing revenue and understating expenses" beginning at least as early as fiscal 2015 to 2017. The company paid a $17.5 million civil penalty.

Super Micro has been among tech companies recently riding a the artificial intelligence wave. Despite the company's recent plummet, shares are still up about 20% year to date.

In August, Super Micro reported fourth-quarter revenue of $5.31 billion, a more than 143% increase over the $2.18 billion it reported in the same quarter of 2023. The company said Wednesday that it would be providing a "business update" next week regarding for the start of the 2025 fiscal year.