BAND

SEC source: 0001514416-25-000038 · wk-form4_1741135060.xml · derivative · entry 2

Bailey Brian D. · CIK 0001575505 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,073

Underlying: Class A Common Stock · 2,025 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Bandwidth Inc. Class A Common Stock.

F5 · derivative.exercise_date: On November 28, 2024, the Reporting Person was granted 8,098 Restricted Stock Units, which vest in four equal quarterly installments beginning on February 28, 2025.

F5 · derivative.expiration_date: On November 28, 2024, the Reporting Person was granted 8,098 Restricted Stock Units, which vest in four equal quarterly installments beginning on February 28, 2025.

SEC source: 0001514416-25-000038 · wk-form4_1741135060.xml · nonDerivative · entry 1

Bailey Brian D. · CIK 0001575505 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 62,382

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · ownership.nature: Carmichael Bandwidth LLC is the managing member of each of the Carmichael Entities (as defined below in footnote 2). Brian D. Bailey and Kevin J. Martin are the managing partners of Carmichael Bandwidth LLC and Carmichael Partners LLC and share voting and dispositive power with respect to the shares held by the Carmichael Entities (as defined below in footnote 2) and Carmichael Partners LLC. The Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein.

F2 · ownership.nature: Following the transactions reported herein, consists of (i) 1,517 shares of Class A Common Stock held by Carmichael Investment Partners, LLC; (ii) 8,750 shares of Class A Common Stock held by Carmichael Partners, LLC ("CP"); (iii) 908 shares of Class A Common Stock held by Carmichael Investment Partners II, LLC ("CIP II"); (iv) 608 shares of Class A Common Stock held by Carmichael Investment Partners III, LLC ("CIP III" and, together with CP and CIP II, the "Carmichael Entities") and (v) 50,599 shares of Class A Common Stock held of record by Brian D. Bailey.

F3 · ownership.nature: Pursuant to an agreement between Mr. Bailey and Carmichael Partners LLC, Carmichael Partners LLC is entitled to all economic benefit with respect to 7,234 shares held by Mr. Bailey.

SEC source: 0001514416-25-000016 · wk-form4_1737580166.xml · nonDerivative · entry 2

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,359

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 18, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.00 to $16.02. 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.

SEC source: 0001514416-25-000016 · wk-form4_1737580166.xml · derivative · entry 3

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,453 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F4 · derivative.exercise_date: On January 18, 2021, the Reporting Person was granted 5,811 Restricted Stock Units, which vested in four annual installments beginning on January 18, 2022.

F4 · derivative.expiration_date: On January 18, 2021, the Reporting Person was granted 5,811 Restricted Stock Units, which vested in four annual installments beginning on January 18, 2022.

SEC source: 0001514416-25-000016 · wk-form4_1737580166.xml · nonDerivative · entry 1

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,858

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000012 · wk-form4_1736216570.xml · nonDerivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,413

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on May 5, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.29 to $17.57. 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.

SEC source: 0001514416-25-000014 · wk-form4_1736216590.xml · nonDerivative · entry 3

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,405

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.29 to $17.57. 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.

SEC source: 0001514416-25-000011 · wk-form4_1736216560.xml · nonDerivative · entry 4

Ross Kade · CIK 0001807759 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 52,416

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.29 to $17.57. 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.

SEC source: 0001514416-25-000010 · wk-form4_1736216549.xml · nonDerivative · entry 4

Bottorff Rebecca · CIK 0001804735 · Director · Chief People Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 49,140

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 7, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.29 to $17.57. 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.

SEC source: 0001514416-25-000013 · wk-form4_1736216580.xml · nonDerivative · entry 3

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 96,522

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.29 to $17.57. 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

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · nonDerivative · entry 6

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 109,783

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.29 to $17.57. 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.

SEC source: 0001514416-25-000012 · wk-form4_1736216570.xml · derivative · entry 6

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 352

Underlying: Class A Common Stock · 351 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F6 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 1,407 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

F6 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 1,407 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

SEC source: 0001514416-25-000012 · wk-form4_1736216570.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,533

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on May 5, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: 2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.96 to $17.03. 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.

SEC source: 0001514416-25-000012 · wk-form4_1736216570.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,578

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000014 · wk-form4_1736216590.xml · derivative · entry 5

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 821

Underlying: Class A Common Stock · 821 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F5 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 3,284 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

F5 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 3,284 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

SEC source: 0001514416-25-000014 · wk-form4_1736216590.xml · derivative · entry 4

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,582

Underlying: Class A Common Stock · 1,581 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F4 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 9,488 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

F4 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 9,488 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

SEC source: 0001514416-25-000014 · wk-form4_1736216590.xml · nonDerivative · entry 2

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,227

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000014 · wk-form4_1736216590.xml · nonDerivative · entry 1

Asbill Richard Brandon · CIK 0001842470 · General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,406

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000011 · wk-form4_1736216560.xml · derivative · entry 6

Ross Kade · CIK 0001807759 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,287

Underlying: Class A Common Stock · 1,287 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F6 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 7,719 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

F6 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 7,719 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

SEC source: 0001514416-25-000011 · wk-form4_1736216560.xml · nonDerivative · entry 3

Ross Kade · CIK 0001807759 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 52,856

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.96 to $17.03. 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.

SEC source: 0001514416-25-000011 · wk-form4_1736216560.xml · nonDerivative · entry 2

Ross Kade · CIK 0001807759 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,003

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000010 · wk-form4_1736216549.xml · derivative · entry 6

Bottorff Rebecca · CIK 0001804735 · Director · Chief People Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,556

Underlying: Class A Common Stock · 1,556 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F6 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 9,334 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

F6 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 9,334 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

SEC source: 0001514416-25-000010 · wk-form4_1736216549.xml · nonDerivative · entry 3

Bottorff Rebecca · CIK 0001804735 · Director · Chief People Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 49,672

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 7, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.96 to $17.03. 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.

SEC source: 0001514416-25-000010 · wk-form4_1736216549.xml · nonDerivative · entry 2

Bottorff Rebecca · CIK 0001804735 · Director · Chief People Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 49,849

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000013 · wk-form4_1736216580.xml · derivative · entry 6

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,195

Underlying: Class A Common Stock · 2,196 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F5 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 13,169 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

F5 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 13,169 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

SEC source: 0001514416-25-000013 · wk-form4_1736216580.xml · derivative · entry 5

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,179

Underlying: Class A Common Stock · 2,180 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F4 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 8,718 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

F4 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 8,718 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

SEC source: 0001514416-25-000013 · wk-form4_1736216580.xml · nonDerivative · entry 2

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,827

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000013 · wk-form4_1736216580.xml · nonDerivative · entry 1

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 95,631

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · derivative · entry 10

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,486

Underlying: Class A Common Stock · 5,486 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F8 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 21,945 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

F8 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 21,945 Restricted Stock Units, which vest in four equal annual installments beginning on January 3, 2023.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · derivative · entry 9

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,918

Underlying: Class A Common Stock · 2,917 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F7 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 17,502 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

F7 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 17,502 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2022, and the remainder vest in three equal annual installments beginning on January 3, 2024.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · nonDerivative · entry 5

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 112,560

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on January 2 and 3, 2025, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.96 to $17.03. 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.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · nonDerivative · entry 4

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 113,781

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · nonDerivative · entry 3

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 108,295

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000012 · wk-form4_1736216570.xml · derivative · entry 5

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 130 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F5 · derivative.exercise_date: On January 2, 2021, the Reporting Person was granted 521 Restricted Stock Units, which vested in four equal annual installments beginning on January 2, 2022.

F5 · derivative.expiration_date: On January 2, 2021, the Reporting Person was granted 521 Restricted Stock Units, which vested in four equal annual installments beginning on January 2, 2022.

SEC source: 0001514416-25-000012 · wk-form4_1736216570.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,227

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000011 · wk-form4_1736216560.xml · derivative · entry 5

Ross Kade · CIK 0001807759 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 426 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F5 · derivative.exercise_date: On January 2, 2021, the Reporting Person was granted 2,553 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2021, and the remainder vested in three equal annual installments beginning on January 2, 2023.

F5 · derivative.expiration_date: On January 2, 2021, the Reporting Person was granted 2,553 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2021, and the remainder vested in three equal annual installments beginning on January 2, 2023.

SEC source: 0001514416-25-000011 · wk-form4_1736216560.xml · nonDerivative · entry 1

Ross Kade · CIK 0001807759 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 51,716

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000010 · wk-form4_1736216549.xml · derivative · entry 5

Bottorff Rebecca · CIK 0001804735 · Director · Chief People Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 515 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F5 · derivative.exercise_date: On January 2, 2021, the Reporting Person was granted 3,090 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2021, and the remainder vested in three equal annual installments beginning on January 2, 2023.

F5 · derivative.expiration_date: On January 2, 2021, the Reporting Person was granted 3,090 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2021, and the remainder vested in three equal annual installments beginning on January 2, 2023.

SEC source: 0001514416-25-000010 · wk-form4_1736216549.xml · nonDerivative · entry 1

Bottorff Rebecca · CIK 0001804735 · Director · Chief People Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,293

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · derivative · entry 8

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 2,536 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F6 · derivative.exercise_date: On January 2, 2021, the Reporting Person was granted 10,143 Restricted Stock Units, which vested in four equal annual installments beginning on January 2, 2022.

F6 · derivative.expiration_date: On January 2, 2021, the Reporting Person was granted 10,143 Restricted Stock Units, which vested in four equal annual installments beginning on January 2, 2022.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · derivative · entry 7

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,021 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F5 · derivative.exercise_date: On January 2, 2021, the Reporting Person was granted 6,126 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2021, and the remainder vested in three equal annual installments beginning on January 2, 2023.

F5 · derivative.expiration_date: On January 2, 2021, the Reporting Person was granted 6,126 Restricted Stock Units, half of which vested in four equal quarterly installments beginning on March 31, 2021, and the remainder vested in three equal annual installments beginning on January 2, 2023.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · nonDerivative · entry 2

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 105,378

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-25-000009 · wk-form4_1736216539.xml · nonDerivative · entry 1

Morken David A. · CIK 0001721962 · Director · Chairman & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 102,842

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-24-000205 · wk-form4_1733188155.xml · nonDerivative · entry 6

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 93,451

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on November 28, 2024 and November 30, 2024, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.64 to $20.77. 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.

SEC source: 0001514416-24-000205 · wk-form4_1733188155.xml · derivative · entry 11

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 63,613

Underlying: Class A Common Stock · 10,602 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Company's Class A Common Stock.

F8 · derivative.exercise_date: On May 30, 2023, the Reporting Person was granted 127,226 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 August 30, 2024.

F8 · derivative.expiration_date: On May 30, 2023, the Reporting Person was granted 127,226 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 August 30, 2024.

SEC source: 0001514416-24-000205 · wk-form4_1733188155.xml · nonDerivative · entry 5

Raiford Daryl · CIK 0001405026 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 97,822

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001514416-24-000206 · wk-form4_1733188165.xml · nonDerivative · entry 4

Agarwal Devesh · CIK 0002029692 · CSSO and Interim COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,839

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on November 28, 2024, pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.87 to $21.78. 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.

SEC source: 0001514416-24-000206 · wk-form4_1733188165.xml · nonDerivative · entry 3

Agarwal Devesh · CIK 0002029692 · CSSO and Interim COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,058

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on November 28, 2024, pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 3, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

SEC source: 0001514416-24-000210 · wk-form4_1733188209.xml · nonDerivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,097

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on November 28, 2024, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on May 5, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.87 to $21.78. 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.

SEC source: 0001514416-24-000210 · wk-form4_1733188209.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,741

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on November 28, 2024, pursuant to a Rule 10b5-1 instruction letter adopted by the Reporting Person on May 5, 2023 related solely to tax obligations associated with awards received in connection with Bandwidth Inc. (the "Company") equity compensation programs.