BLIN · Bridgeline Digital, Inc.

This transaction was executed in multiple trades at a prices ranging from $0.77 to $0.87. The reported price in Column 4 is a weighted average price, rounded to the nearest hundredth. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.

This transaction was executed in multiple trades at a prices ranging from $0.74 to $0.77. The reported price in Column 4 is a weighted average price, rounded to the nearest hundredth. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.

Reporting Person received a restricted stock award pursuant to the Issuer's 2025 Stock Incentive Plan, as amended. The restricted stock award shall vest in twelve (12) equal installments over a period of twelve (12) quarters, commencing with the first fiscal quarter following the date of grant.

The option vests ratably in twelve (12) equal quarterly installments beginning on the first fiscal quarter following the date of grant.

The Reporting Person delivered these shares to satisfy the exercise price.

Options vested in equal quarterly installments beginning May 7, 2024.

Reporting Person received a restricted stock award pursuant to the Issuer's 2025 Stock Incentive Plan. The restricted stock award shall vest in twelve (12) equal installments over a period of twelve (12) quarters, commencing with the first fiscal quarter following the date of grant.

The option vests ratably in twelve (12) equal quarterly installments beginning on the first fiscal quarter following the date of grant.

Reporting Person received a restricted stock award pursuant to the Issuer's 2016 Stock Incentive Plan, as amended. The restricted stock award shall vest in twelve (12) equal installments over a period of twelve (12) quarters, commencing with the first fiscal quarter following June 26, 2025.

Following a reconciliation of the Reporting Person's ownership records, the balance removes 147 shares that were inadvertently included in the Reporting Person's prior Form 4s.

This transaction was executed in multiple trades at a prices ranging from $1.52 to $1.53. The reported price in Column 4 is a weighted average price, rounded to the nearest hundredth. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.

These shares are held by the Michael V. Ketslakh Revocable Trust, of which the Reporting Person is the trustee and beneficiary.

These shares are held by the James Weil and Joni Kahn 2004 Living Trust, of which the Reporting Person is the trustee and a beneficiary.

The reported price in Column 4 is a weighted average price, rounded to the nearest hundredth. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.

This transaction was executed in multiple trades at a prices ranging from $0.83 to $0.85. The reported price in Column 4 is a weighted average price, rounded to the nearest hundredth. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price.