144 0001405026 XXXXXXXX LIVE 0001514416 Bandwidth Inc. 001-38285 2230 BANDMATE WAY RALEIGH NC 27607 800-808-5150 Raiford Daryl Officer Common Morgan Stanley Smith Barney LLC

Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004

1305 22798.35 26588688 01/06/2025 NASDAQ Common 01/03/2025 Restricted stock vesting under a registered plan Issuer N 4376 01/06/2025 N/A N Daryl Raiford

c/o Bandwidth Inc. 2230 Bandmate Way Raleigh NC 27607

Common 11/29/2024 10389 220870.33 Daryl Raiford

c/o Bandwidth Inc. 2230 Bandmate Way Raleigh NC 27607

Common 12/02/2024 4371 90483.63 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 the Issuer's equity compensation programs. 01/08/2025 03/03/2023 /s/ Daryl Raiford