[Form 4] Bandwidth Inc. Insider Trading Activity

Rhea-AI Filing Summary

Devin M. Krupka, an officer (Controller, PAO) of Bandwidth Inc. (BAND), sold 7,166 shares of Class A common stock on 09/17/2025 at a weighted average price of $18.003 per share under a pre-established Rule 10b5-1 plan adopted March 12, 2025. After the reported sale, the filing shows 19,192 shares beneficially owned by Mr. Krupka. The price range for executed trades was $18.00 to $18.07 and the filer will provide details on the number of shares sold at each price upon request.

Insights

Securities Analyst

TL;DR: Routine insider sale under a 10b5-1 plan reduced holdings modestly; not an unusual disclosure.

The Form 4 reports a controlled disposition of 7,166 Class A shares at a weighted average of $18.003, executed under a Rule 10b5-1 plan adopted March 12, 2025. Use of a 10b5-1 plan indicates pre-clearance and timing independence from contemporaneous material nonpublic information. The remaining beneficial ownership of 19,192 shares is explicitly stated, and the filing offers to supply a breakdown of executions across the $18.00–$18.07 range. For investors, this disclosure is procedural rather than a signal of a change in company prospects.

Corporate Governance Expert

TL;DR: Disclosure aligns with good governance practices; sale documented and signed by attorney-in-fact.

The reporting shows adherence to Section 16 reporting requirements: the sale date, weighted average price, and post-transaction beneficial ownership are provided, and the signature was executed by an attorney-in-fact. The explicit note that the trades were pursuant to a 10b5-1 plan and the offer to provide price-by-price details enhance transparency. This filing appears compliant and typical for planned insider sales.

Insider Trade Summary

Net Seller: 7,166 shares ($129,009)

Net Sell 1 txn

Insider Krupka Devin M

Role Controller, PAO

Sold 7,166 shs ($129K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	7,166	$18.003	$129K

Holdings After Transaction: Class A Common Stock — 19,192 shares (Direct)

Footnotes (1)

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

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).

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)
09/17/2025

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	09/17/2025		S(1)		7,166	D	$18.003(2)	19,192	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. Reflects shares sold pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on March 12, 2025.

2. 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.

Remarks:

	/s/ Leah Webb, Attorney-in-Fact for Devin M. Krupka	09/18/2025
	** 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.