Bay Pond files 3.76% stake in Investar Holding

Investar Holding Corporation Schedule 13G/A amendment shows Bay Pond Partners, L.P. beneficially owns 517,534 shares of common stock, representing 3.76% of the class.

Rhea-AI Filing Summary

Investar Holding Corporation Schedule 13G/A amendment shows Bay Pond Partners, L.P. beneficially owns 517,534 shares of common stock, representing 3.76% of the class. The filing lists shared voting and dispositive power for 517,534 shares and is signed 05/15/2026.

Insights

Institutional Ownership Analyst

Institutional holder reports a 3.76% stake with shared control over 517,534 shares.

Bay Pond Partners, L.P. is recorded as beneficial owner of 517,534 shares, holding shared voting and shared dispositive power over the same amount. The filing is an Amendment No. 1 to a Schedule 13G/A.

Share count and 05/15/2026 signature provide the position snapshot; subsequent filings would show any position changes.

Securities Compliance Counsel

Filing is an amended beneficial-ownership disclosure under Section 13.

The Schedule 13G/A format and the Amendment No. 1 label indicate an update to a previously filed passive-investor disclosure. The record shows shared voting/dispositive authority of 517,534 shares and a 3.76% class stake.

Qualifying language and signature date (05/15/2026) are included; no transaction details or changes in status are asserted in the excerpt.

Key Figures

Beneficial ownership: 517,534 shares Percent of class: 3.76% Shared voting power: 517,534 shares +2 more

5 metrics

Beneficial ownership 517,534 shares reported in Schedule 13G/A amendment

Percent of class 3.76% percent of common stock reported

Shared voting power 517,534 shares as filed in Item 4(ii)

Shared dispositive power 517,534 shares as filed in Item 4(iv)

Sole voting/dispositive power 0 shares as filed in Item 4(i) and 4(iii)

Key Terms

Schedule 13G/A, Beneficial ownership, Dispositive power, Shared voting power

4 terms

Schedule 13G/A regulatory

"Amendment No. 1 Schedule 13G/A amendment reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficial ownership regulatory

"Amount beneficially owned: 517,534 (b) Percent of class: 3.76 %"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Dispositive power regulatory

"Shared Dispositive Power 517,534.00"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Shared voting power regulatory

"Shared Voting Power 517,534.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

FAQ

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

What stake does Bay Pond Partners report in ISTR?

Bay Pond Partners, L.P. reports beneficial ownership of 517,534 shares, equal to 3.76% of Investar Holding Corporation's common stock. The filing shows shared voting and dispositive power over the same 517,534 shares.

When was the Schedule 13G/A amendment signed for ISTR?

The amendment is signed and dated 05/15/2026. The signature block lists Ihsan Speede as an authorized person and references Wellington Alternative Investments LLC and Wellington Management Company LLP as related parties in the filing.

Does the filing show who holds sole voting power for these shares?

No; the filing reports 0 shares of sole voting power and 517,534 shares of shared voting power. It attributes shared voting and shared dispositive authority to Bay Pond Partners, L.P.

Is this a purchase or sale disclosure in the Schedule 13G/A for ISTR?

This Schedule 13G/A amendment reports beneficial ownership and control attributes; it does not describe a specific purchase or sale transaction. The excerpt lists position and voting/dispositive powers without transaction details.

What address is listed for the filer in the ISTR Schedule 13G/A?

The filer Bay Pond Partners, L.P. is listed c/o Wellington Management Company LLP at 280 Congress Street, Boston, MA 02210. The issuer address is given as 10500 Coursey Blvd, Baton Rouge, LA 70816.

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

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Accepted by SEC EDGAR 05/15/2026 - 08:12 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Investar Holding Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

46134L105

(CUSIP Number)

03/31/2026

(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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 46134L105

1

Names of Reporting Persons

Bay Pond Partners, L.P.

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 517,534.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 517,534.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

517,534.00

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)

3.8 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Investar Holding Corporation
(b)	Address of issuer's principal executive offices: 10500 Coursey Blvd, Baton Rouge LA 70816
Item 2.
(a)	Name of person filing: Bay Pond Partners, L.P.
(b)	Address or principal business office or, if none, residence: c/o Wellington Management Company LLP, 280 Congress Street, Boston MA 02210
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 46134L105
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: 517,534
(b)	Percent of class: 3.76 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 517,534
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 517,534
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.

Bay Pond Partners, L.P.

Signature:	Ihsan Speede
Name/Title:	Authorized Person
Date:	05/15/2026

Comments accompanying signature: Wellington Alternative Investments LLC; Its General Partner Signature: Ihsan Speede Name/Title: Authorized Person Date: 05/15/2026