Backblaze director receives RSU share grant

NELSON BARBARA H reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

NELSON BARBARA H reported acquisition or exercise transactions in this Form 4 filing.

Backblaze director Barbara H. Nelson received an equity grant of 19,306 shares of Class A Common Stock through restricted stock units. The award was granted under the company’s director compensation policy at a stated price of $0.00 per share and reflects stock-based compensation rather than an open-market purchase.

The RSUs vest on the earlier of the date of Backblaze’s next Annual Meeting of Stockholders or the one-year anniversary of the grant date, if she remains in continuous service. Following this grant, Nelson directly holds 106,862 shares of Class A Common Stock.

Insider Trade Summary

Grant/Award: 19,306 shares

Grant/Award 1 txn

Insider NELSON BARBARA H

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	19,306	$0.00	$0.00

Holdings After Transaction: Class A Common Stock — 106,862 shares (Direct)

Footnotes (1)

1. F1. Pursuant to the Issuer's Director Compensation Policy, the Reporting Person was granted restricted stock units ("RSUs"), which represent a contingent right to receive one share of Class A Common Stock for each RSU. The RSUs are subject to a service-based vesting requirement, which shall be satisfied on the earlier of (A) the date of the Issuer's next Annual Meeting of Stockholders, or (B) the one-year anniversary of the date of grant, provided that the Reporting Person remains in continuous service through such vesting date.

Key Figures

RSU grant size: 19,306 shares Grant price: $0.00 per share Post-grant holdings: 106,862 shares +1 more

4 metrics

RSU grant size 19,306 shares Restricted stock units of Class A Common Stock granted to director

Grant price $0.00 per share Stated price for RSU award under director compensation policy

Post-grant holdings 106,862 shares Total Class A Common Stock directly held after the RSU grant

RSU vesting horizon Earlier of next annual meeting or one year Service-based vesting requirement for the RSU award

Key Terms

restricted stock units ("RSUs"), service-based vesting requirement, Annual Meeting of Stockholders

3 terms

restricted stock units ("RSUs") financial

"the Reporting Person was granted restricted stock units ("RSUs"), which represent a contingent right"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

service-based vesting requirement financial

"The RSUs are subject to a service-based vesting requirement, which shall be satisfied"

Annual Meeting of Stockholders financial

"satisfied on the earlier of (A) the date of the Issuer's next Annual Meeting of Stockholders"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Backblaze (BLZE) director Barbara H. Nelson report in this Form 4?

Director Barbara H. Nelson reported receiving an equity grant of 19,306 restricted stock units of Backblaze Class A Common Stock. These RSUs are part of the company’s director compensation policy and increase her direct holdings to 106,862 shares after the award.

How many Backblaze (BLZE) shares were granted to Barbara H. Nelson?

Barbara H. Nelson was granted 19,306 restricted stock units tied to Backblaze Class A Common Stock. Each RSU represents a contingent right to receive one share, subject to vesting conditions described in the company’s director compensation policy and this Form 4 footnote.

At what price were Barbara H. Nelson’s Backblaze RSUs granted?

The 19,306 restricted stock units granted to Barbara H. Nelson carry a stated grant price of $0.00 per share. This indicates a stock-based compensation award rather than an open-market purchase, consistent with typical non-cash director compensation structures.

What are the vesting terms for Barbara H. Nelson’s Backblaze RSUs?

The RSUs vest upon the earlier of Backblaze’s next Annual Meeting of Stockholders or the one-year anniversary of the grant date. Vesting requires that Barbara H. Nelson remain in continuous service as a director through the applicable vesting date, per the policy.

How many Backblaze (BLZE) shares does Barbara H. Nelson hold after this grant?

After this RSU grant, Barbara H. Nelson directly holds 106,862 shares of Backblaze Class A Common Stock. This total reflects her position following the 19,306-share restricted stock unit award reported in the Form 4 insider transaction filing.

Is Barbara H. Nelson’s Backblaze Form 4 transaction a market buy or compensation grant?

The Form 4 reports a compensation-related grant, not a market purchase. The 19,306 restricted stock units were awarded pursuant to Backblaze’s Director Compensation Policy with a stated price of $0.00 per share, typical of non-cash equity compensation for directors.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/01/2026 - 04:12 PM EDT Learn about SEC filing dates

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^*

NELSON BARBARA H

(Last) (First) (Middle)

2261 MARKET STREET STE 81006

(Street)

SAN FRANCISCO CALIFORNIA 94114

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Backblaze, Inc. [ BLZE ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

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

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

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

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	05/26/2026		A		19,306(1)	A	$0	106,862	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. Pursuant to the Issuer's Director Compensation Policy, the Reporting Person was granted restricted stock units ("RSUs"), which represent a contingent right to receive one share of Class A Common Stock for each RSU. The RSUs are subject to a service-based vesting requirement, which shall be satisfied on the earlier of (A) the date of the Issuer's next Annual Meeting of Stockholders, or (B) the one-year anniversary of the date of grant, provided that the Reporting Person remains in continuous service through such vesting date.

Remarks:

	/s/ Evangeline Cheung, Attorney-in-Fact	06/01/2026
	** 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.
* Form 4: SEC 1474 (03-26)