Other external expenses increased from €1.8 million for the three months ended June 30, 2022 to €2.5 million for the three months ended June 30, 2023. The increase in other expenses mainly resulted from increased other operating expenses.
General and administrative expenses increased from €18.0 million for the six months ended June 30, 2022 to €18.9 million for the six months ended June 30, 2023.
Share-based compensation expenses decreased from €4.9 million for the six months ended June 30, 2022 to €4.8 million for the six months ended June 30, 2023.
Personnel related general and administrative expenses, excluding share-based compensation, increased from €5.2 million for the six months ended June 30, 2022 to €6.4 million for the six months ended June 30, 2023. The increase mainly resulted from an increased headcount in our finance, IT, human resources and communications functions.
Professional and consulting fees decreased from €3.1 million for the six months ended June 30, 2022 to €2.7 million for the six months ended June 30, 2023. The decrease in professional and consulting fees resulted mainly from lower legal expenses and consulting expenses.
Other external expenses increased from €4.8 million for the six months ended June 30, 2022 to €5.0 million for the six months ended June 30, 2023. The increase in other expenses mainly resulted from increased other operating expenses.
Other Financial Income and Other Financial Expenses
Other financial income decreased from €7.0 million for the three months ended June 30, 2022 to €4.0 million for the three months ended June 30, 2023. The decrease mainly resulted from lower foreign exchange gains.
Other financial expenses increased from €0.4 million for the three months ended June 30, 2022 to €1.1 million for the three months ended June 30, 2023. The increase mainly resulted from higher foreign exchange losses.
Other financial income decreased from €8.8 million for the six months ended June 30, 2022 to €6.7 million for the six months ended June 30, 2023. The decrease mainly resulted from lower foreign exchange gains.
Other financial expenses increased from €1.5 million for the six months ended June 30, 2022 to €4.7 million for the six months ended June 30, 2023. The increase mainly resulted from higher foreign exchange losses.
Change in fair value of warrant liabilities
Subsequent to the Business Combination, there were 7,187,500 warrants outstanding, which were classified as financial liabilities through profit and loss. The warrants entitle the holder to purchase one ordinary share at an exercise price of $11.50 per share. The warrants will expire five years after the completion of the Business Combination or earlier upon redemption or liquidation in accordance with their terms.
The fair value of the warrants decreased from €2.35 ($2.51) per warrant as of December 31, 2022 to €1.32 ($1.44) as of March 31, 2023 and increased to €3.15 ($3.42) as of June 30, 2023. The result is an increase in fair value of warrant liabilities of €13.1 million for the three months ended June 30, 2023 and an increase in fair value of warrant liabilities of ���5.7 million for the six months ended June 30, 2023.
The fair value of the warrants decreased from €3.88 ($4.39) per warrant as of December 31, 2021 to €1.58 ($1.75) as of March 31, 2022 and increased to €1.96 ($2.04) as of June 30, 2022. The result is an increase in fair value of warrant liabilities of €2.8 million for the three months ended June 30, 2022 and a decrease in fair value of warrant liabilities of €13.7 million for the six months ended June 30, 2022.
Liquidity and Capital Resources
Sources of Liquidity
We have incurred losses since inception, with the exception of the year ended December 31, 2022. We have negative cash flows from operations for the six months ended June 30, 2023 and positive cash flows from operations for the six months ended June 30, 2022. As of June 30, 2023, we had an accumulated deficit of €544.7 million.