SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 -------------- SCHEDULE 13D (Amendment No. 1) (RULE 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(a)(1) MANNATECH, INCORPORATED ----------------------- (Name of Issuer) COMMON STOCK ------------ (Title of Class of Securities) 563771 10 4 ----------- (CUSIP Number) SIDLEY & AUSTIN 555 WEST FIFTH STREET, SUITE 4000 LOS ANGELES, CA 90013 ATTN: SHERWIN L. SAMUELS, ESQ. (213) 896-6000 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) DECEMBER 20, 1999 ----------------- (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box / /. NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. SEE Rule 13d-7(b) for other parties to whom copies are to be sent. (Continued on following pages) (Page 1 of 14 Pages) - ---------------------- (1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, SEE the NOTES).
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 2 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS SAMUEL L. CASTER - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF 5,713,549 SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH 5,713,549 -------------------------------------------- 10 SHARED DISPOSITIVE POWER - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,713,549 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 23.1% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 3 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS WILLIAM C. FIORETTI - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF 3,791,665 SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 1,450,102 REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH 3,791,665 -------------------------------------------- 10 SHARED DISPOSITIVE POWER 1,450,102 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,241,767 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 21.2% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 4 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS THE FIORETTI FAMILY PARTNERSHIP, LTD. - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION TEXAS - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 1,450,102 REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH -------------------------------------------- 10 SHARED DISPOSITIVE POWER 1,450,102 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,450,102 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 5.9% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 5 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS CHARLES E. FIORETTI - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF 5,264,149 SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH 5,264,149 -------------------------------------------- 10 SHARED DISPOSITIVE POWER - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,264,149 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 21.3% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 6 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS DONALD W. HERNDON - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF 375,485 SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH 375,485 -------------------------------------------- 10 SHARED DISPOSITIVE POWER - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 375,485 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 1.5% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 7 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS HARLEY REGINALD MCDANIEL, SR., M.D. - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* PF, OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF 509,569 SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH 509,569 -------------------------------------------- 10 SHARED DISPOSITIVE POWER - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 509,569 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 2.1% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 8 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS DICK HANKINS, JR. - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 139,800 REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH -------------------------------------------- 10 SHARED DISPOSITIVE POWER 139,800 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 139,800 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 0.6% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 9 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS NANCY HANKINS - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 139,800 REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH -------------------------------------------- 10 SHARED DISPOSITIVE POWER 139,800 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 139,800 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 0.6% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
- -------------------------------------------------------------------------------- CUSIP NO. 563771 10 4 13D Page 10 of 14 Pages - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSONS S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS MARLIN RAY ROBBINS, JR. - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) /X/ - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* OO - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) / / - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES - -------------------------------------------------------------------------------- NUMBER 7 SOLE VOTING POWER OF 906,387 SHARES -------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY REPORTING -------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH 906,387 -------------------------------------------- 10 SHARED DISPOSITIVE POWER - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 906,387 - -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 3.7% - -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT!
ITEM 1. SECURITY AND ISSUER This Amendment No. 1 ("Amendment") relates to the common stock, par value $0.0001 per share (the "Stock"), of Mannatech, Incorporated, a Texas corporation (the "Company"), which has its principal executive offices at 600 South Royal Lane, Suite 200, Coppell, TX, 75019. This Amendment amends that certain Schedule 13D filed with the Securities and Exchange Commission on October 29, 1999 by the following persons: Samuel L. Caster, an individual ("Mr. Caster"), William C. Fioretti, an individual ("Mr. W. Fioretti"), The Fioretti Family Partnership, Ltd., a Texas limited partnership (the "Fioretti Partnership"), Charles E. Fioretti, an individual ("Mr. C. Fioretti"), Donald W. Herndon, an individual ("Mr. Herndon") Harley Reginald McDaniel, Sr., M.D., an individual ("Dr. McDaniel"), Dick Hankins, Jr., an individual ("Mr. Hankins"), Nancy Hankins, an individual ("Mrs. Hankins"), and Marlin Ray Robbins, Jr., an individual ("Mr. Robbins"). Each of the persons or entities (other than the Company) named in the previous sentence is referred to herein individually as a "Reporting Person" and collectively as the "Reporting Persons." Item 4 is hereby amended to read in its entirety as follows: ITEM 4. PURPOSE OF TRANSACTION The Reporting Persons are filing this Amendment to report that no Reporting Person has any current intention to act together with any other Reporting Person for the purpose of acquiring, holding or disposing of any Stock. Accordingly, it is the Reporting Persons' belief that no Reporting Person is currently a member of a "group" within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934. Depending upon the market price thereof and upon other conditions, certain Reporting Persons may acquire additional Stock from time to time in the open market or otherwise. In addition, depending upon market prices and other conditions, certain Reporting Persons may dispose of some or all of their Stock at any time and from time to time in the open market or otherwise at prices which such Reporting Persons may determine. Item 5 is hereby amended to read in its entirety as follows: ITEM 5. INTEREST IN SECURITIES OF ISSUER (a) The responses to Items 2 through 11 on the cover pages hereto are incorporated herein by reference. The Reporting Persons' percentage ownership of the Stock was determined by referring to the Company's most recent Form 10-Q (filed with the Securities and Exchange Commission of November 12, 1999). (b) Mr. Hankins and Mrs. Hankins share voting and dispositive power with respect to their shares of Stock reported on this Amendment. Mr. W. Fioretti, as the general partner of the Fioretti Partnership, may be deemed to share with the Fioretti Partnership voting Page 11 of 14 Pages
and dispositive power with respect to the Fioretti Partnership's shares of Stock reported on this Amendment. Except as set forth in this Item 5(b), none of the Reporting Persons has voting or dispositive power over another Reporting Person's shares of Stock. Each of the Reporting Persons disclaims beneficial ownership of the Stock for any other purposes. (c) (i) On November 1, 1999, Mr. C. Fioretti sold 7,000 shares of Stock at a price of $7.22/share in a privately negotiated transaction. On November 2, 1999, Mr. C. Fioretti sold 200 shares of Stock at a price of $7.06/share in a privately negotiated transaction. On November 2, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $7.19/share in a privately negotiated transaction. On November 3, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $6.87/share in a privately negotiated transaction. On November 4, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $6.81/share in a privately negotiated transaction. On November 5, 1999, Mr. C. Fioretti sold 1,800 shares of Stock at a price of $7.06/share in a privately negotiated transaction. On November 5, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $7.12/share in a privately negotiated transaction. On November 8, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $6.69/share in a privately negotiated transaction. On November 8, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $6.75/share in a privately negotiated transaction. On November 9, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $6.91/share in a privately negotiated transaction. On November 10, 1999, Mr. C. Fioretti sold 3,000 shares of Stock at a price of $6.81/share in a privately negotiated transaction. On November 11, 1999, Mr. C. Fioretti sold 2,000 shares of Stock at a price of $6.56/share in a privately negotiated transaction. On November 12, 1999, Mr. C. Fioretti sold 8,000 shares of Stock at a price of $6.56/share in a privately negotiated transaction. On November 12, 1999, Mr. C. Fioretti sold 100 shares of Stock at a price of $6.62/share in a privately negotiated transaction. On November 15, 1999, Mr. C. Fioretti sold 9,900 shares of Stock at a price of $6.62/share in a privately negotiated transaction. On November 16, 1999, Mr. C. Fioretti sold 10,000 shares of Stock at a price of $6.75/share in a privately negotiated transaction. On November 17, 1999, Mr. C. Fioretti sold 600 shares of Stock at a price of $6.87/share in a privately negotiated transaction. On November 17, 1999, Mr. C. Fioretti sold 10,000 shares of Stock at a price of $6.75/share in a privately negotiated transaction. On November 18, 1999, Mr. C. Fioretti sold 400 shares of Stock at a price of $6.69/share in a privately negotiated transaction. On November 19, 1999, Mr. C. Fioretti sold 900 shares of Stock at a price of $6.69/share in a privately negotiated transaction. On November 22, 1999, Mr. C. Fioretti sold 1,600 shares of Stock at a price of $6.50/share in a privately negotiated transaction. On November 29, 1999, Mr. C. Fioretti sold 19,000 shares of Stock at a price of $6.00/share in a privately negotiated transaction. On November 29, 1999, Mr. C. Fioretti sold 1,500 shares of Stock at a price of $6.06/share in a privately negotiated transaction. On November 30, 1999, Mr. C. Fioretti sold 3,000 shares of Stock at a price of $6.00/share in a privately negotiated transaction. On November 30, 1999, Mr. C. Fioretti sold 400 shares of Stock at a price of $6.06/share in a privately negotiated transaction. (ii) On October 21, 1999, Mr. W. Fioretti sold 400 shares of Stock at a price of $6.375/share in an open market transaction. On October 21, 1999, Mr. W. Fioretti sold 300 shares of Stock at a price of $6.1875/share in an open market transaction. On October 21, 1999, Mr. W. Fioretti sold 400 shares of Stock at a price of $6.75/share in an open market transaction. On October 21, Page 12 of 14 Pages
1999, Mr. W. Fioretti sold 3,300 shares of Stock at a price of $6.1875/share in an open market transaction. On October 28, 1999, Mr. W. Fioretti sold 7,400 shares of Stock at a price of $7.80/share in an open market transaction. On October 29, 1999, Mr. W. Fioretti sold 15,700 shares of Stock at a price of $7.784/share in an open market transaction. On November 1, 1999, Mr. W. Fioretti sold 2,000 shares of Stock at a price of $7.556/share in an open market transaction. On November 3, 1999, Mr. W. Fioretti sold 30,000 shares of Stock at a price of $7.087/share in an open market transaction. On November 22, 1999, Mr. W. Fioretti sold 59,500 shares of Stock at a price of $8.842/share in an open market transaction. On November 23, 1999, Mr. W. Fioretti sold 11,000 shares of Stock at a price of $8.625/share in an open market transaction. (iii) On October 29, 1999, Mr. Robbins purchased 2,054 shares of Stock at a price of $7.06/share in an open market transaction. On November 11, 1999, Mr. Robbins purchased 5,000 shares of Stock at a price of $6.75/share in an open market transaction. (d) Mr. Hankins and Mrs. Hankins share the right to receive and the power to direct the receipt of dividends from, or the proceeds from the sale of their shares of Stock reported on this Amendment. As the general partner of the Fioretti Partnership, Mr. W. Fioretti may be deemed to have the power to direct the receipt of dividends from, or the proceeds from the sale of the Fioretti Partnership's shares of Stock reported on this Amendment. Except as set forth in this Item 5(d), no persons other than the Reporting Persons, with respect to the Stock, have the right to receive or power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Stock reported on this Amendment. (e) As of the date hereof, the following persons have ceased to be the beneficial owners of more that five percent (5%) of the Stock: Mr. Hankins, Mrs. Hankins, Mr. Herndon, Mr. Robbins, and Dr. McDaniel. Item 6 is hereby amended to read in its entirety as follows: ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO THE SECURITIES OF THE ISSUER Except for the Joint Filing Agreement among the Reporting Persons (a copy of which is being filed herewith as EXHIBIT A) there are no contracts, arrangements, understandings or relationships among the Reporting Persons or any other persons with respect to the securities of the Company. Item 7 is hereby amended to read in its entirety as follows: ITEM 7. MATERIAL TO BE FILED AS EXHIBITS EXHIBIT A: Joint Filing Agreement among the Reporting Persons dated the date hereof. Page 13 of 14 Pages
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. December 20, 1999. /s/ SAMUEL L. CASTER /s/ HARLEY REGINALD MCDANIEL, SR., M.D. - ----------------------------------- -------------------------------------- SAMUEL L. CASTER HARLEY REGINALD MCDANIEL, SR., M.D. /s/ WILLIAM C. FIORETTI /s/ DICK HANKINS, JR. - ----------------------------------- -------------------------------------- WILLIAM C. FIORETTI DICK HANKINS, JR. THE FIORETTI FAMILY PARTNERSHIP By: /s/ WILLIAM C. FIORETTI /s/ NANCY HANKINS ------------------------------ -------------------------------------- William C. Fioretti, NANCY HANKINS its General Partner /s/ CHARLES E. FIORETTI /s/ MARLIN RAY ROBBINS, JR. - ----------------------------------- -------------------------------------- CHARLES E. FIORETTI MARLIN RAY ROBBINS, JR. /s/ DONALD W. HERNDON - ----------------------------------- DONALD W. HERNDON Page 14 of 14 Pages
EXHIBIT 99.1 EXHIBIT A JOINT FILING AGREEMENT (Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934, as amended) Each of the undersigned hereby agrees to be included in the filing of the Amendment No. 1 to Schedule 13D dated December 20, 1999 and any subsequent amendments hereto, relating to the Common Stock, $0.0001 par value per share, of Mannatech, Incorporated, a Texas corporation, beneficially owned by each of the undersigned. December 20, 1999 /s/ SAMUEL L. CASTER /s/ HARLEY REGINALD MCDANIEL, SR., M.D. - ---------------------------- -------------------------------------- SAMUEL L. CASTER HARLEY REGINALD MCDANIEL, SR., M.D. /s/ WILLIAM C. FIORETTI /s/ DICK HANKINS, JR. - ---------------------------- -------------------------------------- WILLIAM C. FIORETTI DICK HANKINS, JR. THE FIORETTI FAMILY PARTNERSHIP By: /s/ WILLIAM C. FIORETTI /s/ NANCY HANKINS ----------------------- -------------------------------------- William C. Fioretti, NANCY HANKINS its General Partner /s/ CHARLES E. FIORETTI /s/ MARLIN RAY ROBBINS, JR. - ---------------------------- -------------------------------------- CHARLES E. FIORETTI MARLIN RAY ROBBINS, JR. /s/ DONALD W. HERNDON - ---------------------------- DONALD W. HERNDON