Krupka Devin M

SEC source: 0001967808-26-000030 · wk-form4_1788379574.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,958

F1 · kind: Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 13, 2026.

SEC source: 0001967808-26-000028 · wk-form4_1788294124.xml · nonDerivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,032

F2 · price: 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.

SEC source: 0001967808-26-000028 · wk-form4_1788294124.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,538

F1 · price: 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.

SEC source: 0001967808-26-000028 · wk-form4_1788294124.xml · derivative · entry 6

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,585

Underlying: Class A Common Stock · 1,518 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 November 28, 2024, the Reporting Person was granted 18,205 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.

F5 · derivative.expiration_date: On November 28, 2024, the Reporting Person was granted 18,205 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.

SEC source: 0001967808-26-000028 · wk-form4_1788294124.xml · derivative · entry 5

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,775

Underlying: Class A Common Stock · 2,775 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 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.

F4 · derivative.expiration_date: 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.

SEC source: 0001967808-26-000028 · wk-form4_1788294124.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,251

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: 0001967808-26-000028 · wk-form4_1788294124.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,733

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: 0001967808-26-000023 · wk-form4_1781554275.xml · nonDerivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,958

F1 · kind: Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 13, 2026.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.69 to $66.81. 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: 0001967808-26-000023 · wk-form4_1781554275.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,414

F1 · kind: Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 13, 2026.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.65 to $66.625. 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: 0001967808-26-000023 · wk-form4_1781554275.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,308

F1 · kind: Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 13, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.64 to $65.63. 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: 0001967808-26-000023 · wk-form4_1781554275.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,571

F1 · kind: Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 13, 2026.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.56 to $64.545. 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.

SEC source: 0001967808-26-000021 · wk-form4_1780346604.xml · nonDerivative · entry 5

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,371

SEC source: 0001967808-26-000021 · wk-form4_1780346604.xml · nonDerivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,373

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.89 to $59.75. 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: 0001967808-26-000021 · wk-form4_1780346604.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,885

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.88 to $58.88 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.

SEC source: 0001967808-26-000021 · wk-form4_1780346604.xml · derivative · entry 7

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,103

Underlying: Class A Common Stock · 1,517 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 November 28, 2024, the Reporting Person was granted 18,205 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.

F5 · derivative.expiration_date: On November 28, 2024, the Reporting Person was granted 18,205 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.

SEC source: 0001967808-26-000021 · wk-form4_1780346604.xml · derivative · entry 6

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,550

Underlying: Class A Common Stock · 2,776 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 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.

F4 · derivative.expiration_date: 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.

SEC source: 0001967808-26-000021 · wk-form4_1780346604.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,569

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: 0001967808-26-000021 · wk-form4_1780346604.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,052

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: 0001967808-26-000014 · wk-form4_1778012196.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,276

SEC source: 0001967808-26-000014 · wk-form4_1778012196.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,609

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.0377 to $46.04. 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.

SEC source: 0001967808-26-000012 · wk-form4_1774296284.xml · derivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,842 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.

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Bandwidth Inc. Class A Common Stock.

F2 · derivative.exercise_date: On March 21, 2022, the Reporting Person was granted 7,368 Restricted Stock Units, which vested in four equal annual installments beginning on March 21, 2023.

F2 · derivative.expiration_date: On March 21, 2022, the Reporting Person was granted 7,368 Restricted Stock Units, which vested in four equal annual installments beginning on March 21, 2023.

SEC source: 0001967808-26-000012 · wk-form4_1774296284.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,053

SEC source: 0001967808-26-000012 · wk-form4_1774296284.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,577

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: 0001967808-26-000008 · wk-form4_1772658401.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,735

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.33 to $15.78. 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.

SEC source: 0001967808-26-000006 · wk-form4_1772486933.xml · derivative · entry 5

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,620

Underlying: Class A Common Stock · 1,517 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.

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Bandwidth Inc. Class A Common Stock.

F3 · derivative.exercise_date: On November 28, 2024, the Reporting Person was granted 18,205 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.

F3 · derivative.expiration_date: On November 28, 2024, the Reporting Person was granted 18,205 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.

SEC source: 0001967808-26-000006 · wk-form4_1772486933.xml · derivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,326

Underlying: Class A Common Stock · 2,775 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.

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Bandwidth Inc. Class A Common Stock.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0001967808-26-000006 · wk-form4_1772486933.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,348

SEC source: 0001967808-26-000006 · wk-form4_1772486933.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,566

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: 0001967808-26-000006 · wk-form4_1772486933.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,049

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: 0001967808-26-000004 · wk-form4_1771881465.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,274

SEC source: 0001967808-26-000004 · wk-form4_1771881465.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,133

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 · kind: On February 20, 2026, the Reporting Person was granted 8,472 Restricted Stock Units, all of which vested immediately.

SEC source: 0001967808-26-000002 · wk-form4_1767734307.xml · derivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 352 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.

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of Bandwidth Inc. Class A Common Stock.

F2 · derivative.exercise_date: On January 3, 2022, the Reporting Person was granted 1,407 Restricted Stock Units, which vested in four equal annual installments beginning on January 3, 2023.

F2 · derivative.expiration_date: On January 3, 2022, the Reporting Person was granted 1,407 Restricted Stock Units, which vested in four equal annual installments beginning on January 3, 2023.

SEC source: 0001967808-26-000002 · wk-form4_1767734307.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,661

SEC source: 0001967808-26-000002 · wk-form4_1767734307.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,780

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: 0001967808-25-000011 · wk-form4_1764712572.xml · nonDerivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 26,428

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on November 28, 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: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.93 to $14.29. 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: 0001967808-25-000011 · wk-form4_1764712572.xml · derivative · entry 8

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,000

Underlying: Class A Common Stock · 28,000 shares

Expires not disclosed

F3 · 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 November 28, 2025, the Reporting Person was granted 28,000 Restricted Stock Units, one third of which vest on the first anniversary of the date of grant and the remaining shares will vest in eight equal quarterly installments beginning on February 28, 2027.

F7 · derivative.expiration_date: On November 28, 2025, the Reporting Person was granted 28,000 Restricted Stock Units, one third of which vest on the first anniversary of the date of grant and the remaining shares will vest in eight equal quarterly installments beginning on February 28, 2027.

SEC source: 0001967808-25-000011 · wk-form4_1764712572.xml · derivative · entry 7

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,137

Underlying: Class A Common Stock · 6,068 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.

F6 · derivative.exercise_date: On November 28, 2024, the Reporting Person was granted 18,205 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares will vest in eight equal quarterly installments beginning on February 28, 2026.

F6 · derivative.expiration_date: On November 28, 2024, the Reporting Person was granted 18,205 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares will vest in eight equal quarterly installments beginning on February 28, 2026.

SEC source: 0001967808-25-000011 · wk-form4_1764712572.xml · derivative · entry 6

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,101

Underlying: Class A Common Stock · 2,775 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 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.

F5 · derivative.expiration_date: 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.

SEC source: 0001967808-25-000011 · wk-form4_1764712572.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 · 1,369 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 November 28, 2022, the Reporting Person was granted 16,432 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vested in eight equal quarterly installments beginning on February 28, 2024.

F4 · derivative.expiration_date: On November 28, 2022, the Reporting Person was granted 16,432 Restricted Stock Units, one third of which vested on the first anniversary of the date of grant and the remaining shares vested in eight equal quarterly installments beginning on February 28, 2024.

SEC source: 0001967808-25-000011 · wk-form4_1764712572.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,404

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: 0001967808-25-000011 · wk-form4_1764712572.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,336

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: 0001967808-25-000011 · wk-form4_1764712572.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,561

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: 0001967808-25-000007 · wk-form4_1758225864.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,192

F1 · kind: Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 12, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.00 to $18.07. 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.

SEC source: 0001967808-25-000003 · wk-form4_1756845649.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 26,358

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on August 28, 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: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.87 to $15.1947. 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: 0001967808-25-000003 · wk-form4_1756845649.xml · derivative · entry 5

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,876

Underlying: Class A Common Stock · 2,776 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 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.

F5 · derivative.expiration_date: 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.

SEC source: 0001967808-25-000003 · wk-form4_1756845649.xml · derivative · entry 4

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,369

Underlying: Class A Common Stock · 1,370 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 November 28, 2022, the Reporting Person was granted 16,432 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, 2024.

F4 · derivative.expiration_date: On November 28, 2022, the Reporting Person was granted 16,432 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, 2024.

SEC source: 0001967808-25-000003 · wk-form4_1756845649.xml · nonDerivative · entry 2

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,547

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: 0001967808-25-000003 · wk-form4_1756845649.xml · nonDerivative · entry 1

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,771

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: 0001514416-25-000098 · wk-form4_1748639916.xml · nonDerivative · entry 3

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,401

F1 · kind: Reflects shares sold to cover taxes upon the vesting of Restricted Stock Units on May 28, 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: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.34 to $14.80. 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: 0001514416-25-000098 · wk-form4_1748639916.xml · derivative · entry 5

Krupka Devin M · CIK 0001967808 · Controller, PAO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,652

Underlying: Class A Common Stock · 2,775 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 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.

F5 · derivative.expiration_date: 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.