[SCHEDULE 13G/A] Stride, Inc. SEC Filing

Rhea-AI Filing Summary

Blue Acquisition Corp. (NASDAQ: BACCU) filed a Form 8-K to disclose that, beginning 4 August 2025, investors may elect to separately trade the components of the IPO units—one Class A ordinary share and one-tenth (1/10) of a Class A ordinary share right. Units that are not split will continue trading under ticker BACCU; separated securities will trade as BACC (Class A share) and BACCR (share right) on the Nasdaq Global Market. To separate, brokers must contact transfer agent Continental Stock Transfer & Trust Company.

The disclosure is limited to this administrative change; no financial statements, earnings data, or business-combination updates accompany the notice.

Insights

SPAC Analyst

TL;DR — Routine unit split; improves liquidity but no valuation impact.

This 8-K simply activates the standard post-IPO feature that lets SPAC unit holders trade Class A shares and fractional rights independently. Liquidity should rise as investors price each security separately, yet the action does not alter cash balances, trust proceeds, or the SPAC’s timeline toward an initial business combination. Absent new deal or redemption information, the filing is largely procedural and neutral for valuation.

Portfolio Manager

TL;DR — Administrative, modestly positive for trading flexibility.

Separating BACCU units allows arbitrageurs and retail holders to express distinct views on shares versus rights, potentially tightening spreads and boosting volume. However, without accompanying merger news, the event does not change fundamental risk or return expectations. I view the impact as neutral to slightly positive from a market-microstructure perspective.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Stride, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

86333M108

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 86333M108

1

Names of Reporting Persons

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,004,087.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,101,051.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,101,051.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

2.5 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Stride, Inc.
(b)	Address of issuer's principal executive offices: 11720 PLAZA AMERICA DRIVE, 11720 PLAZA AMERICA DRIVE, RESTON, VIRGINIA, 20190
Item 2.
(a)	Name of person filing: William Blair Investment Management, LLC
(b)	Address or principal business office or, if none, residence: 150 North Riverside Plaza, Chicago, IL 60606
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 86333M108
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1,101,051
(b)	Percent of class: 2.5%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,004,087
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1,101,051
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Signature:	Walter R. Randall, Jr
Name/Title:	Chief Compliance Officer
Date:	07/31/2025