Block, Inc. — Director's Dealing 2025

Oct 5, 2025

10/3/25, 2:33 PM

sec.gov/Archives/edgar/data/1512673/000180364925000008/xsl144X01/primary_doc.xml

UNITED STATES Form 144 Filer Information SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 FORM 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933

144: Filer Information

Filer CIK 0001803649 Filer CCC XXXXXXXX Is this a LIVE or TEST Filing? LIVE TEST

Submission Contact Information

Name Phone E-Mail Address

144: Issuer Information

Name of Issuer Block, Inc. SEC File Number 001-37622 Address of Issuer 1955 Broadway Suite 600 Oakland CALIFORNIA 94612 Phone 503-704-8745 Name of Person for Whose Account the Brian Grassadonia Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Officer

144: Securities Information

Title of the Class ofSecurities To Be Sold	Name and Address of theBroker	Number ofShares orOther UnitsTo Be Sold	AggregateMarket Value	Number ofShares orOther UnitsOutstanding	ApproximDate ofSale	ateName theSecuritiesExchange
Class A Common Stock	Morgan Stanley SmithBarney LLC ExecutiveServices200 W Civic Center Drive4th FloorSandy UT 84070	1342	100339.2	549574000	10/02/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

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sec.gov/Archives/edgar/data/1512673/000180364925000008/xsl144X01/primary_doc.xml

144: Securities To Be Sold

		Title of the Class	Date you	Nature of	Name of Person	Is	Date	Amount of	Date of	Nature of Payment
			Acquired	Acquisition	from Whom	this	Donor	Securities	Payment	*****
				Transaction	Acquired	a	Acquired	Acquired
						Gift?
		Class A	10/01/2	Restricted Stock	Issuer			1342	10/01/2	Not Applicable
		Common Stock	025						025

***** If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

		Name and Address of Seller	Title of Securities Sold	Date of	Amount of	Gross Proceeds
				Sale	Securities
					Sold
		Brian Grassadonia	Class A Common Stock	09/02/20	9760	744102.4
		1955 Broadway		25
		Suite 600
		Oakland CA 94612
		Brian Grassadonia	Class A Common Stock	08/21/20	6465	473238
		1955 Broadway		25
		Suite 600
		Oakland CA 94612

144: Remarks and Signature

Remarks

Date of Notice 10/03/2025

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature Brian Grassadonia

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

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