BAND · Bandwidth Inc. · Insider Trading

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on May 28, 2026.

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on November 24, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.01 to $47.99. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 3, 2025, as modified on June 3, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.65 to $50.00. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 3, 2025, as modified on June 3, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.60 to $49.35. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on November 24, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.02 to $49.89. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 3, 2025, as modified on June 3, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.40 to $48.23. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on November 24, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.02 to $49.01. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 13, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.29 to $49.28. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.33 to $49.6351. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.33 to $49.6351. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.33 to $49.6351. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.29 to $49.28. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.33 to $49.6351. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.29 to $49.28. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.29 to $49.28. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.33 to $49.6351. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.29 to $49.28. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.33 to $49.6351. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.29 to $49.28. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.33 to $49.6351. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.29 to $49.28. The Reporting Person undertakes to provide Bandwidth Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2023, the Reporting Person was granted 92,725 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2025.

Each Restricted Stock Unit represents a contingent right to receive one share of the Bandwidth Inc. Class A Common Stock.

On November 28, 2025, the Reporting Person was granted 13,333 Restricted Stock Units, which vest in four equal quarterly installments beginning on February 28, 2026.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2023, the Reporting Person was granted 47,127 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2025.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2023, the Reporting Person was granted 50,023 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2025.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2024, the Reporting Person was granted 25,023 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2026.

Carmichael Bandwidth LLC is the managing member of each of Carmichael Partners, LLC ("CP"); Carmichael Investment Partners II, LLC ("CP II"); and Carmichael Investment Partners III, LLC ("CP III"). Brian D. Bailey and Kevin J. Martin are the managing partners of Carmichael Bandwidth LLC and CP and share voting and dispositive power with respect to the shares held by CP, CP II and CP III. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein.

Following the transactions reported herein, consists of 8,750 shares of Class A Common Stock held by CP and 66,672 shares of Class A Common Stock held of record by Brian D. Bailey.

Pursuant to an agreement between Mr. Bailey and CP, CP is entitled to all economic benefit with respect to 7,234 shares held by Mr. Bailey.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2023, the Reporting Person was granted 33,303 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2025.

Each Restricted Stock Unit represents a contingent right to receive one share of Bandwidth Inc. Class A Common Stock.

On November 28, 2025, the Reporting Person was granted 13,333 Restricted Stock Units, which vest in four equal quarterly installments beginning on February 28, 2026.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2024, the Reporting Person was granted 74,040 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2026.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2024, the Reporting Person was granted 26,257 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2026.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On August 28, 2023, the Reporting Person was granted 5,353 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight quarterly installments beginning on November 28, 2024.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On February 28, 2025, the Reporting Person was granted 62,617 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on May 28, 2026.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On August 28, 2023, the Reporting Person was granted 17,844 Restricted Stock Units, one third of which vest on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on November 28, 2024.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2023, the Reporting Person was granted 49,451 Restricted Stock Units, one third of which vest on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2025.

Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

On November 28, 2024, the Reporting Person was granted 26,561 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vest in eight equal quarterly installments beginning on February 28, 2026.