X0609 4 2026-08-13 0 0000724004 MESA LABORATORIES INC /CO/ MLAB 0001573666 Kadia Siddhartha false 7475 LUSK BOULEVARD SAN DIEGO CA 92121 0 1 0 0 President and CEO 0 Common Stock 2026-08-13 4 P 0 7093 112.8 A 7093 I By Trust Represents shares purchased directly in a private transaction from John Sullivan, Mesa Board Chair by the Anjou Parekh Lifetime Access Trust for which the reporting person's spouse serves as trustee. Represents shares held by the Anjou Parekh Lifetime Access Trust for which the reporting person's spouse serves as trustee. The reporting person disclaims beneficial ownership of the securities held by the trust except to the extent of his pecuniary interest therein. John Sakys under Power of Attorney by Siddhartha Kadia 2026-08-17