Thank you, Guy, and good afternoon again, everyone.
As of September 30, 2022, Aethlon Medical had a cash balance of approximately $19.6 million. Our consolidated operating expenses for the 3 months ended September 30, 2022, were approximately $3.67 million compared to $2.14 million for the 3 months ended September 30, 2021. This increase of $1.53 million or 71% in the 2022 period was due to increases in our general and administrative expenses of $863,000, in our professional fees of $354,000 and in our payroll and related expenses of $307,000.
The $863,000 increase in our general and administrative expenses was primarily due to the combination of a $384,000 increase in our clinical trial expenses, a $258,000 increase in supplies, primarily for manufacturing Hemopurifiers, a $140,000 increase in subcontract expenses related to our government contracts, a $50,000 increase in our rent expense and a $32,000 increase in our insurance expense.
The $354,000 increase in our professional fees was primarily due to a combination of a $152,000 increase in our contract labor expense associated with product development and analytical services, a $136,000 increase in our legal fees and a $61,000 increase in our investor relations expenses, primarily related to solicitation expenses associated with our 2022 Annual Meeting of Stockholders.
The $307,000 increase in our payroll and related expenses was in part due to an increase in our stock-based compensation expense of $112,000, and our cash-based compensation expense increased by $195,000 due to our increased head count. In September 2022, the Board of Directors of Exosome Sciences, Inc., or ESI; and Aethlon, as the majority shareholder of ESI, approved the dissolution of ESI, our former subsidiary. As a result of this dissolution, we recorded a noncash charge of approximately $142,000 as other expense in the 3 months ended September 30, 2022.
Aethlon did not report any revenue related to our government contracts with the NIH in the 3 months ended September 30, 2022, compared to approximately $132,000 in the 3 months ended September 30, 2021. As of September 30, 2022, the company had approximately $574,000 of deferred revenue related to those contracts as a result of not achieving certain milestones in those contracts. The NIH award contract ended on September 15, 2022, and we presented the required final report to the NCI. Once the NCI completes the closeout review of the contract, we expect to recognize this revenue to $574,000 currently recorded as deferred revenue on our September 30, 2022, balance sheet.
As a result of the changes in revenues and expenses I just noted, our net loss increased to approximately $3.8 million in the 3 months ended September 30, 2022, from approximately $2 million in the 3 months ended September 30, 2021. During the 6 months ended September 30, 2022, we raised approximately $8.9 million in net proceeds under our ATM agreement with H.C. Wainwright, pursuant to sales of our common stock.
We included these earnings results and related commentary in the press release issued earlier this afternoon. That release included the balance sheet for September 30, 2022, and the statements of operations for the 3 and 6 months ended September 30, 2022, and 2021. We will file a quarterly report on Form 10-Q following this call.
Our next earnings call for the fiscal third quarter ending December 31, 2022, will coincide with the filing of our quarterly report on Form 10-Q in early February 2023. And now Chuck, Steve, Guy and I would be happy to take any questions that you may have. Operator, please open the call for questions.