Baselake exits Generation Bio (NASDAQ: GBIO) reporting 0% ownership stake

Rhea-AI Filing Summary

Generation Bio Co. received an amended Schedule 13G showing that Baselake Partners, LP, Baselake Management, LLC and David Paolella now report beneficial ownership of 0 shares of Generation Bio common stock, or 0% of the class.

The filing confirms they have no sole or shared voting or dispositive power over any Generation Bio shares and that they own 5 percent or less of the company’s common stock. The certifying parties state the securities were not acquired or held with the purpose or effect of changing or influencing control of Generation Bio.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Generation Bio Co.

(Name of Issuer)

Common Stock, $0.0001 Par Value

(Title of Class of Securities)

37148K209

(CUSIP Number)

02/09/2026

(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. 37148K209

1

Names of Reporting Persons

Baselake Partners, LP

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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 37148K209

1

Names of Reporting Persons

Baselake 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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

IA, OO

SCHEDULE 13G

CUSIP No. 37148K209

1

Names of Reporting Persons

David Paolella

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Generation Bio Co.
(b)	Address of issuer's principal executive offices: 301 Binney Street Cambridge, Massachusetts 02142
Item 2.
(a)	Name of person filing: Baselake Partners, LP* Baselake Management, LLC* David Paolella*
(b)	Address or principal business office or, if none, residence: 3155 W. Big Beaver Road, Suite 207, Troy, Michigan 48084
(c)	Citizenship: Baselake Partners, LP - Delaware Baselake Management, LLC - Delaware David Paolella - United States of America
(d)	Title of class of securities: Common Stock, $0.0001 Par Value
(e)	CUSIP No.: 37148K209
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: Baselake Partners, LP - 0* Baselake Management, LLC - 0* David Paolella - 0*
(b)	Percent of class: Baselake Partners, LP - 0%* Baselake Management, LLC - 0%* David Paolella - 0%*
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Baselake Partners, LP - 0 Baselake Management, LLC - 0 David Paolella - 0
	(ii) Shared power to vote or to direct the vote: Baselake Partners, LP - 0* Baselake Management, LLC - 0* David Paolella - 0*
	(iii) Sole power to dispose or to direct the disposition of: Baselake Partners, LP - 0 Baselake Management, LLC - 0 David Paolella - 0
	(iv) Shared power to dispose or to direct the disposition of: Baselake Partners, LP - 0* Baselake Management, LLC - 0* David Paolella - 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 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.

Baselake Partners, LP

Signature:	/s/ David Paolella
Name/Title:	David Paolella, Managing Member of Baselake Management, LLC, its investment manager
Date:	02/11/2026

Baselake Management, LLC

Signature:	/s/ David Paolella
Name/Title:	David Paolella, Managing Member
Date:	02/11/2026

David Paolella

Signature:	/s/ David Paolella
Name/Title:	Individually
Date:	02/11/2026

Exhibit Information

Exhibit I - JOINT FILING STATEMENT

FAQ

What does Baselake’s amended Schedule 13G/A say about its GBIO ownership?

The amended Schedule 13G/A reports that Baselake Partners, Baselake Management, and David Paolella now beneficially own 0 shares of Generation Bio common stock, representing 0% of the class. They also report no sole or shared voting or dispositive power over any shares.

Who are the reporting persons in the GBIO Schedule 13G/A amendment?

The reporting persons are Baselake Partners, LP, Baselake Management, LLC, and David Paolella. Baselake entities are organized in Delaware, while Paolella is a United States citizen. All three jointly report 0 shares and 0% beneficial ownership of Generation Bio common stock in this amendment.

What class of securities is covered in Baselake’s GBIO Schedule 13G/A?

The filing covers Generation Bio Co.’s common stock with a par value of $0.0001 per share, identified by CUSIP 37148K209. Baselake and related filers state they hold 0 shares of this class and therefore represent 0% of the outstanding common stock.

Why is this GBIO Schedule 13G/A classified as owning 5 percent or less?

Item 5 of the Schedule 13G/A states “Ownership of 5 percent or less of a class.” Baselake Partners, Baselake Management, and David Paolella each report 0 shares and 0% of Generation Bio’s common stock, which formally places their ownership below the 5 percent reporting threshold.

What certification do the GBIO Schedule 13G/A filers provide about control intent?

The filers certify that the securities referenced were not acquired and are not held to change or influence control of Generation Bio. They also state the securities are not held in connection with any transaction having that purpose, other than activities solely tied to a nomination under Rule 240.14a-11.

When did the reportable event for the GBIO Schedule 13G/A occur?

The date of the event requiring the filing is listed as 02/09/2026. Signatures by David Paolella, including as Managing Member of Baselake Management, LLC and individually, are dated 02/11/2026, confirming the updated 0-share, 0% beneficial ownership status for Generation Bio.