SCHEDULE 13D/A 0001437749-23-003350 0001409022 XXXXXXXX LIVE 7 Common Stock, $1.00 par value per share 12/31/2025 false 0001408534 32043P106 First Guaranty Bancshares, Inc.

400 EAST THOMAS STREET HAMMOND LA 70401

Edgar R. Smith III (985) 748-6572 63399 Highway 51 North Roseland LA 70456 0001409022 N Smith Edgar R. III a OO N LA 2867467.00 0.00 2867467.00 0.00 2867467.00 N 18.2 IN 0001685288 N Smith & Hood Holding Company, LLC a OO N LA 0.00 1062817.00 0.00 1062817.00 1062817.00 N 6.7 OO 0001653020 N Smith & Hood Investments, LLC a OO N LA 0.00 341437.00 0.00 341437.00 341437.00 N 2.2 OO Y Big 4 Investments, LLC a OO N LA 340344.00 0.00 340344.00 0.00 340344.00 N 2.2 OO Y Smith-Hoover Investments, LLC a OO N LA 0.00 20063.00 0.00 20063.00 20063.00 N 0.1 OO Y MACSMITH LLC a OO N LA 0.00 21907.00 0.00 21907.00 21907.00 N 0.1 OO Y SMITH & TATE INVESTMENTS, LLC a OO N LA 0.00 537266.00 0.00 537266.00 537266.00 N 3.4 OO Common Stock, $1.00 par value per share First Guaranty Bancshares, Inc. 400 EAST THOMAS STREET HAMMOND LA 70401 This Schedule 13D is being filed by or on behalf of (i) Edgar R. Smith III, an individual resident of the state of Louisiana; (ii) Smith & Hood Holding Company, LLC, a Louisiana limited liability company of which Mr. Smith is co-owner ("Holding LLC"); (iii) Smith & Hood Investments, LLC, a Louisiana limited liability company of which Mr. Smith is co-owner ("Investments, LLC"); (iv) Big 4 Investments, LLC is a Louisiana limited liability company of which Mr. Smith is the sole member ("Big 4"); (v) Smith-Hoover Investments LLC, a Louisiana limited liability company of which Mr. Smith is co-owner ("Smith-Hoover"); MACSMITH, LLC, a Louisiana limited liability company of which Mr. Smith is a member of a member ("MACSMITH"); and Smith & Tate Investments, LLC ("Smith & Tate"), a Louisiana limited liability company of which Mr. Smith is a member of a member (each, a "Reporting Person" and collectively, the "Reporting Persons"). The business address of Edgar R. Smith III is 63399 Highway 51 North, Roseland, LA 70456. The address of Holding LLC and Investments, LLC is 11239 Highway 16, Amite, LA 70422. The address of Big 4 is 63399 Highway 51 North, Roseland, LA 70456. The address of Smith-Hoover is 1250 Southwest Railroad Avenue Suite 230 A, Hammond, LA 70403. The address of MACSMITH is 40089 Deer Creek Drive, Ponchatoula, LA 70454. The address of Smith & Tate is 63399 Highway 51 North, Roseland, LA 70456. Mr. Smith's principal occupation is entrepreneur primarily engaged in manufacture and/or distribution of lubricants, oil, and related products of lubricants, as well as a trucking business. The principal business of Holding LLC is to invest in Issuer securities. The principal business of Investments, LLC is managing investments, including but not limited to Issuer securities, as well as holding real estate. The principal business of Big 4 is investments, including Issuer securities, Issuer debt and real estate. The principal business of Smith-Hoover is investments, including Issuer securities and real estate. The principal business of MACSMITH is to invest in commercial real estate and hold Issuer securities. The principal business of Smith & Tate is managing investments, including but not limited to Issuer securities and debt. During the last five years, no Reporting Person, nor to Mr. Smith's knowledge any general partner or person acting in such capacity of each Reporting Person, has been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors) nor has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. During the last five years, no Reporting Person, nor to Mr. Smith's knowledge any general partner or person acting in such capacity of each Reporting Person, has been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors) nor has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. This Schedule 13D is being filed by or on behalf of (i) Edgar R. Smith III, an individual resident of the state of Louisiana; (ii) Smith & Hood Holding Company, LLC, a Louisiana limited liability company of which Mr. Smith is co-owner ("Holding LLC"); (iii) Smith & Hood Investments, LLC, a Louisiana limited liability company of which Mr. Smith is co-owner ("Investments, LLC"); (iv) Big 4 Investments, LLC is a Louisiana limited liability company of which Mr. Smith is the sole member ("Big 4"); (v) Smith-Hoover Investments LLC, a Louisiana limited liability company of which Mr. Smith is co-owner ("Smith-Hoover"); MACSMITH, LLC, a Louisiana limited liability company of which Mr. Smith is a member of a member ("MACSMITH"); and Smith & Tate Investments, LLC ("Smith & Tate"), a Louisiana limited liability company of which Mr. Smith is a member of a member (each, a "Reporting Person" and collectively, the "Reporting Persons"). The purchase of shares by Smith & Tate in the December Private Placement was funded by contributions by Mr. Smith and the other member of Smith & Tate; Mr. Smith funded his contribution from existing liquidity. The majority of the shares owned by each Reporting Person was owned prior to the Issuer becoming a reporting company and the remainder were purchased on the open market or the result of a dividend reinvestment program open to all shareholders. The acquisition of shares pursuant to the Promissory Note Amendment and the Subordinated Note Amendment were made pursuant to pre-existing agreements between Smith & Tate and the Issuer. The Reporting Persons acquired the Common Stock reported on this Schedule 13D for investment purposes. The Reporting Persons may in the future acquire additional shares of Common Stock or dispose of some or all of the shares of Common Stock held by them on the open-market or in privately negotiated transactions, on such terms and at such times as the Reporting Persons may deem advisable. Mr. Smith currently serves as a director of the Issuer. None of the Reporting Persons has any present plan or proposal that would result in any actions described in paragraphs (a) through (j) of Item 4 of Schedule 13D, except as might be proposed by Mr. Smith in his capacity as a Director of the Issuer or by such Board with the participation of Mr. Smith as a Director. The Reporting Persons reserve the right in the future to formulate any such plans or proposals, and to take any actions with respect to their investments in the Issuer, including any or all actions described in paragraphs (a) through (j) of Item 4 of Schedule 13D. Mr. Smith may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 2,867,467 shares of Common Stock, or 18.16% of the outstanding shares of Common Stock. Holding LLC may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 1,062,817 shares of Common Stock, or 6.73% of the outstanding shares of Common Stock. Investments, LLC may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 341,437 shares of Common Stock, or 2.16% of the outstanding shares of Common Stock. Big 4 may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 340,344 shares of Common Stock, or 2.15% of the outstanding shares of Common Stock. Smith-Hoover may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 20,063 shares of Common Stock, or 0.13% of the outstanding shares of Common Stock. MACSMITH may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 21,907 shares of Common Stock, or 0.14% of the outstanding shares of Common Stock. Smith & Tate may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 537,266 shares of Common Stock, or 3.40% of the outstanding shares of Common Stock. Mr. Smith may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 2,867,467 shares of Common Stock, or 18.16% of the outstanding shares of Common Stock. Holding LLC may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 1,062,817 shares of Common Stock, or 6.73% of the outstanding shares of Common Stock. Investments, LLC may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 341,437 shares of Common Stock, or 2.16% of the outstanding shares of Common Stock. Big 4 may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 340,344 shares of Common Stock, or 2.15% of the outstanding shares of Common Stock. Smith-Hoover may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 20,063 shares of Common Stock, or 0.13% of the outstanding shares of Common Stock. MACSMITH may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 21,907 shares of Common Stock, or 0.14% of the outstanding shares of Common Stock. Smith & Tate may be deemed to beneficially own and have shared voting and dispositive power over an aggregate of 537,266 shares of Common Stock, or 3.40% of the outstanding shares of Common Stock. Except as otherwise set forth in Item 3 above or as reported on a Statement of Change of Beneficial Ownership on Form 4 (including the December Private Placement and the acquisition of shares pursuant to the Promissory Note Amendment and Subordinated Note Amendment), no Reporting Person has effected any transactions in shares of the Issuer's shares of Common Stock during the last 60 days. No person or entity is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock reported on this Statement except for the owners listed herein. Not applicable. None. Exhibit No. Description 99.1 Joint Filing Agreement* (Incorporated by reference to Exhibit 99.1 of the Schedule 13D/A filed by Edgar R. Smith III with the Securities and Exchange Commission on July 15th, 2025.) *Previously filed Smith Edgar R. III /s/ Edgar R. Smith III 01/05/2026 Smith & Hood Holding Company, LLC /s/ Edgar R. Smith III 01/05/2026 Smith & Hood Investments, LLC /s/ Edgar R. Smith III 01/05/2026 Big 4 Investments, LLC /s/ Edgar R. Smith III 01/05/2026 Smith-Hoover Investments, LLC /s/ Edgar R. Smith III 01/05/2026 MACSMITH LLC /s/ Edgar R. Smith III 01/05/2026 SMITH & TATE INVESTMENTS, LLC /s/ Edgar R. Smith III 01/05/2026