#1 The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $5.115 to $5.50, inclusive. The reporting person undertakes to provide Geospace Technologies Corporation (the "Company"), any security holder of the Company, or staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

#2 Represents shares held by the Owens 2008 Grandkids Trust, in which the reporting person is trustee. The reporting person disclaims beneficial ownership of these shares held by the Trust, except to the extent of his pecuniary interest therein.

#1 The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $5.115 to $5.50, inclusive. The reporting person undertakes to provide Geospace Technologies Corporation (the "Company"), any security holder of the Company, or staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

#2 Represents shares held by the Owens 2008 Grandkids Trust, in which the reporting person is trustee. The reporting person disclaims beneficial ownership of these shares held by the Trust, except to the extent of his pecuniary interest therein.

#1 The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $5.19 to $5.49, inclusive. The reporting person undertakes to provide Geospace Technologies Corporation (the "Company"), any security holder of the Company, or staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

#2 Represents shares held by the Owens 2008 Grandkids Trust, in which the reporting person is trustee. The reporting person disclaims beneficial ownership of these shares held by the Trust, except to the extent of his pecuniary interest therein.

#1 The price reported in Column 4 is a weighted average price. With respect to the August 19, 2022 transaction, the shares were purchased in multiple transactions at prices ranging from $4.98 to $4.99, inclusive. With respect to the August 22, 2022 transaction, the shares were purchased in multiple transactions at prices ranging from $4.96 to $4.98, inclusive. The reporting person undertakes to provide Geospace Technologies Corporation (the "Company"), any security holder of the Company, or staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

#2 Represents shares held by the Owens 2008 Grandkids Trust, in which the reporting person is trustee. The reporting person disclaims beneficial ownership of these shares held by the Trust, except to the extent of his pecuniary interest therein.