Bandwidth (BAND) accounting chief sells 5,613 shares in open trade

Rhea-AI Filing Summary

Bandwidth Inc. reported that its Controller and Principal Accounting Officer, Devin M. Krupka, sold 5,613 shares of Class A Common Stock in an open-market transaction on March 4, 2026, at a weighted-average price of $15.5262 per share. These sales occurred in multiple trades between $15.33 and $15.78. After the transaction, Krupka directly owned 29,735 shares of Bandwidth Inc. stock.

Insider Trade Summary

Net Seller: 5,613 shares ($87,149)

Net Sell 1 txn

Insider Krupka Devin M

Role Controller, PAO

Sold 5,613 shs ($87K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	5,613	$15.5262	$87K

Holdings After Transaction: Class A Common Stock — 29,735 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Krupka Devin M

(Last) (First) (Middle)

C/O BANDWIDTH INC.

2230 BANDMATE WAY

(Street)

RALEIGH NC 27607

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Bandwidth Inc. [ BAND ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Controller, PAO

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/04/2026		S		5,613	D	$15.5262(1)	29,735	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

Remarks:

	/s/ Leah Webb, Attorney-in-Fact for Devin M. Krupka	03/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Bandwidth (BAND) report for Devin M. Krupka?

Bandwidth reported that Controller and Principal Accounting Officer Devin M. Krupka sold 5,613 shares of Class A Common Stock. The sale was an open-market transaction executed on March 4, 2026, and is detailed in a Form 4 insider trading report.

At what price did Devin M. Krupka sell Bandwidth (BAND) shares?

The reported price is a weighted-average of $15.5262 per share. According to the filing, the shares were sold in multiple transactions, with individual trade prices ranging from $15.33 to $15.78 across the executed sales.

How many Bandwidth (BAND) shares does Devin M. Krupka own after the sale?

After selling 5,613 shares, Devin M. Krupka directly owns 29,735 shares of Bandwidth Class A Common Stock. This post-transaction ownership figure is disclosed in the Form 4 as the total shares held following the reported sale.

What role does Devin M. Krupka hold at Bandwidth (BAND)?

Devin M. Krupka serves as Bandwidth’s Controller and Principal Accounting Officer. This officer role is identified in the insider trading report and explains why the transaction is reportable under Section 16 as a Form 4 filing.

Was the Bandwidth (BAND) insider sale a single trade or multiple trades?

The filing states the sale price is a weighted average, indicating multiple trades. Shares were sold in several transactions, with prices ranging between $15.33 and $15.78, aggregated into the reported weighted-average price of $15.5262 per share.