X0202 SCHEDULE 13G 0000903064 XXXXXXXX LIVE Common Stock 09/30/2026 0001001115 GEOSPACE TECHNOLOGIES CORP 37364X109 7007 Pinemont Dr. Houston TX 77040 Rule 13d-1(b) GRACE & WHITE INC /NY NY 300522.00 0.00 793498.00 0.00 793498.00 N 6.13 IA GEOSPACE TECHNOLOGIES CORP 7007 PINEMONT DRIVE, HOUSTON, TX 77040 Grace & White, Inc. 515 Madison Ave. Suite 1700 NY, NY 10022 USA N IA 793,498 6.13% 300,522 0 793,498 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. GRACE & WHITE INC /NY S/MARC RAVITZ 10/07/2026