#1 The restricted stock units were awarded to the Reporting Person for no cash or other similar consideration.

#2 Represents the number of shares required to be withheld in accordance with Rule 16b-3 to cover the Reporting Person's tax withholding obligations in connection with the vesting of the restricted stock units reported herein.

#1 Each restricted stock unit (RSU) represents a contingent right to receive one share of EMCORE common stock. The RSUs were issued pursuant to the Amended and Restated EMCORE Corporation 2019 Equity Incentive Plan. The RSUs vest as to 1/4 of the underlying shares on each of the first four anniversaries of the grant date, subject to the Reporting Person's continued service with the Issuer through the applicable vesting date.

#2 On March 23, 2021, the Reporting Person was granted 29,000 RSUs, vesting in four equal annual installments beginning on the first anniversary of the grant date, which grant was previously reported on a Form 4, Table I. The Reporting Person vested in 7,250 shares on March 23, 2023 from this RSU award. The number of shares reported here represents the number of shares required to be withheld in accordance with Rule 16b-3 to cover the Reporting Person's tax withholding obligation in connection with the vesting of the RSUs on March 23, 2023.

#1 Each restricted stock unit (RSU) represents a contingent right to receive one share of EMCORE common stock. The RSUs were issued pursuant to the Amended and Restated EMCORE Corporation 2019 Equity Incentive Plan. The RSUs vest as to 1/4 of the underlying shares on each of the first four anniversaries of the grant date, subject to the Reporting Person's continued service with the Issuer through the applicable vesting date.

#2 On March 23, 2021, the Reporting Person was granted 29,000 RSUs, vesting in four equal annual installments beginning on the first anniversary of the grant date, which grant was previously reported on a Form 4, Table I. The Reporting Person vested in 7,250 shares on March 23, 2023 from this RSU award. The number of shares reported here represents the number of shares required to be withheld in accordance with Rule 16b-3 to cover the Reporting Person's tax withholding obligation in connection with the vesting of the RSUs on March 23, 2023.

#1 Represents shares of Issuer common stock subject to an award of performance-based restricted stock units ("PSUs") that vests based on the Issuer's total shareholder return ("TSR") compared to pre-established TSR goals, based on the TSR of the Russell Microcap Index, that were set by the Compensation Committee of the Board of Directors. The Compensation Committee determined on April 25, 2022 that the number of PSUs earned was 38.48% of the target number of PSUs subject to the second tranche of the award.

#2 The PSUs were awarded to the Reporting Person for no cash or other similar consideration.

#3 Represents the number of shares required to be withheld in accordance with Rule 16b-3 to cover the Reporting Person's tax withholding obligations in connection with the vesting of the PSUs reported herein.