SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D
                                 Amendment No. 4

                    Under the Securities Exchange Act of 1934

                            Flamel Technologies S.A.
                            ------------------------
                                (Name of Issuer)

                                Ordinary Shares
                            ------------------------
                         (Title of Class of Securities)

                                   338488 10 9
                            ------------------------
                                 (CUSIP Number)

                                  Hilary Strain
                       One Embarcadero Center, Suite 4050
                             San Francisco, CA 94111
                                 (415) 362-4022
                            ------------------------
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                 April 16, 2003
                            ------------------------
             (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(b)(3) or (4), check the following box
[ ].

         Check the following box if a fee is being paid with this statement [ ].
(A fee  is not  required  only  if the  reporting  person:  (1)  has a  previous
statement on file  reporting  beneficial  ownership of more than five percent of
the class of  securities  described  in Item 1; and (2) has  filed no  amendment
subsequent  thereto  reporting  beneficial  ownership of five percent or less of
such class. (See Rule 13d-7).

         Note: Six copies of this statement,  including all exhibits,  should be
filed with the  Commission.  See Rule  13d-1(a) for other parties to whom copies
are to be sent.

         * 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 the 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,  as  amended  (the  "Exchange  Act") or  otherwise  subject  to the
liabilities  of that  section  of the  Exchange  Act but shall be subject to all
other provisions of the Exchange Act.

                        (Continued on following page(s))

                               Page 1 of 18 Pages

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 2 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Alta Partners - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION California - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 1 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 1 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 1 - -------------------------------------------------------------------------------- 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* CO - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! Footnote 1: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 3 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Alta BioPharma Partners, L.P. - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 2 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 2 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 2 - -------------------------------------------------------------------------------- 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* PN - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! Footnote 2: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 4 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Alta Embarcadero BioPharma, LLC - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION California - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 3 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 3 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 3 - -------------------------------------------------------------------------------- 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* CO - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! Footnote 3: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 5 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Flamel Chase Partners (Alta Bio), LLC - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 4 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 4 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 4 - -------------------------------------------------------------------------------- 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* CO - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! Footnote 4: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 6 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Alta BioPharma Management, LLC - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 5 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 5 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 5 - -------------------------------------------------------------------------------- 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* CO - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! Footnote 5: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 7 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Alta/Chase BioPharma Management, LLC - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 6 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 6 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 6 - -------------------------------------------------------------------------------- 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* CO - -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT! Footnote 6: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 8 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Jean Deleage - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* AF - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER 1 -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 7 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON 1 WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 7 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,001 Please see Footnote 7 and 7a - -------------------------------------------------------------------------------- 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! Footnote 7: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA). Footnote 7a: In addition Jean Deleage owns 1 share of Flamel Ordinary Shares.

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 9 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Garrett Gruener - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* AF - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER 1,000 -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 8 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON 1,000 WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 8 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,587,000 Please see Footnote 8 - -------------------------------------------------------------------------------- 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! Footnote 8: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA). In addition, Mr. Gruener owns 1,000 shares in his BEDCO Pension and Profit Sharing.

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 10 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Daniel Janney - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* AF - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 9 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 9 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 9 - -------------------------------------------------------------------------------- 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! Footnote 9: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 11 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Alix Marduel - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* AF - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER -0- -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 10 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON -0- WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 10 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,586,000 Please see Footnote 10 - -------------------------------------------------------------------------------- 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! Footnote 10: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 12 of 18 Pages - -------------------------------------------------------------------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Guy Nohra - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |_| (b) |X| - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* AF - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) |_| - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION U.S.A. - -------------------------------------------------------------------------------- 7 SOLE VOTING POWER 1,000 -------------------------------------------------------- NUMBER OF 8 SHARED VOTING POWER SHARES BENEFICIALLY 3,586,000 See Footnote 11 OWNED BY -------------------------------------------------------- EACH 9 SOLE DISPOSITIVE POWER REPORTING PERSON 1,000 WITH -------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 3,586,000 See Footnote 11 - -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,587,000 Please see Footnote 11 - -------------------------------------------------------------------------------- 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! Footnote 11: Includes 2,161,000 shares of ordinary shares and Warrants to purchase 1,050,000 shares of Class A (BSA) and 375,000 shares of Class B (BSA). In addition Mr. Nohra owns 1,000 shares in his BEDCO Pension and Profit Sharing.

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 13 of 18 Pages - -------------------------------------------------------------------------------- Item 1. Security and Issuer. This Statement on Schedule D relates to the Ordinary Shares, $0.080 French franc par value per share (the "Shares"), of Flamel Technologies, S.A., a French Societe Anonyme organized under the laws of The Republic of France (the "Company"). The principal executive offices of the Company are located at Parc Club Du Moulin a Vent, 33, avenue de Dr. Georges Levy, Venissieux, Cedex 69693, France. Item 2. Identity and Background. (a) This Statement is filed by Alta BioPharma Partners, L.P., a Delaware limited partnership ("Alta BioPharma"), Alta Embarcadero BioPharma, LLC, a California limited liability company ("Embarcadero LLC"), and Flamel Chase Partners (Alta Bio), LLC, a Delaware limited liability company ("Flamel Alta Bio") by virtue of their direct beneficial ownership of shares, by Alta BioPharma Management Partners, LLC, a Delaware limited liability company ("Alta Management"), by virtue of being the sole general partner of Alta BioPharma, by Alta/Chase BioPharma Management LLC, a Delaware limited liability company (Alta/Chase Management) by virtue of being the sole managing member of Flamel Chase Partners (Alta Bio), LLC and by Alta Partners, a California corporation ("Alta Partners"), by virtue of being the management advisory company of these entities. Alta BioPharma, Embarcadero LLC, Flamel Alta Bio, Alta Management, Alta/Chase Management and Alta Partners are collectively referred to as the "Reporting Persons." Jean Deleage, Garrett Gruener, Daniel Janney, Alix Marduel, and Guy Nohra (the "Managing Directors") are the managing directors and members of Alta Management, Alta/Chase Management and officers of Alta Partners. By virtue of the relationships described above and their roles with Alta Partners, each of the Managing Directors and members may be deemed to control Alta Partners, Alta/Chase Management, Alta Management, and, therefore, may be deemed to possess indirect beneficial ownership of the shares held by each entity. However, none of the Managing Directors, acting alone, has voting or investment power with respect to the shares directly beneficially held by the entities and, as a result, the Managing Directors disclaim beneficial ownership of the shares beneficially owned by each entity, except to the extent of their pecuniary interest in each entity. Embarcadero LLC is a side company that makes all investments pro rata to the capital of Alta BioPharma with all allocations made to its members based on paid-in capital. Certain Managing Directors are members of Embarcadero LLC and certain members of Embarcadero LLC are affiliates of Alta Partners. (b) The principal executive offices of Alta BioPharma, Embarcadero LLC, Flamel Chase Alta Bio, Alta Management, Alta/Chase Management and Alta Partners, and the business address of each Partner, are located at One Embarcadero Center, Suite 4050, San Francisco, California 94111. (c) Alta Partners provides investment advisory services to venture capital firms. Alta BioPharma, Flamel Chase Alta Bio and Embarcadero LLC's principal business is acting as venture capital investment vehicles. Alta/Chase Management and Alta Management's principal business is acting as managing director of Flamel Chase Alta Bio and Alta BioPharma, respectively. Each of the Directors' principal business is acting as a managing director of Alta Management and Alta/Chase Management and as a director of Alta Partners. (d) None of the Reporting Persons or, to the knowledge of the Reporting Persons, any of the Managing Directors, has been convicted in a criminal proceeding in the past five years (excluding traffic violations or similar misdemeanors). (e) During the past five years, none of the Reporting Persons or, to the knowledge of the Reporting Persons, and none of the Managing Directors, was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which such person 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 of finding any violation with respect to such laws.

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 14 of 18 Pages - -------------------------------------------------------------------------------- (f) Alta Partners is a California corporation. Alta BioPharma is a Delaware limited partnership. Embarcadero LLC is a California limited liability corporation. Flamel Chase Alta Bio is a Delaware limited liability company. Alta Management and Alta/Chase Management are Delaware limited liability companies. Each of the Managing Directors is a citizen of the United States. (g) Jean Deleage resigned his position as a Director of Flamel Technologies on August 13, 2001. Mr. Deleage owns one share of Ordinary Stock of Flamel Technologies stock. He is a managing director of Alta Management, Alta/Chase Management and a managing member of Embarcadero, LLC. By virtue of his roles with Alta Partners, he may be deemed to share control of Alta Partners, Alta/Chase Management, Alta Management, and, therefore, may be deemed to possess indirect beneficial ownership of the Shares held by each entity. However, he is not acting alone, he has voting or investment power with respect to the shares directly beneficially held by the entities and, as a result, he disclaims beneficial ownership of the shares directly beneficially owned by each entity, except to the extent of their pecuniary interest in each entity. Item 3. Source and Amount of Funds or Other Consideration. The total amount of funds required by Alta BioPharma to exercise the warrants for 466,192 shares of Ordinary Stock reported in Item 5(a) was $65,266.88, the total amount of funds required by Embarcadero LLC to exercise the warrants for 17,572 shares of Ordinary Stock was as reported in Item 5(a) was $2,460.08 and the total amount of funds required by Flamel Chase Alta Bio to exercise the warrants for 266,236 shares of Ordinary Shares reported in Item 5(a) was $37,273.04. Such funds were provided by each entity's capital available for investment. Item 4. Purpose of Transaction. On April 9, 2003, the funds affiliated with Alta Partners acquired Ordinary Stock through the exercising of its Class C Ordinary warrants into shares of Ordinary Stock at the exercise price of $0.14 per share. Alta BioPharma exercised a Class C Ordinary warrant for an aggregate purchase price of $65,266.88 and received 466,192 shares of Ordinary Stock. Flamel Chase Alta Bio exercised a Class C Ordinary Warrant for the aggregate purchase price of $37,273.04 and received 266,236 shares of Ordinary Stock. Embarcadero LLC exercised a Class C Ordinary warrant for the aggregate purchase price of $2,460.08 and received 17,572 shares of Ordinary Stock. Alta BioPharma, Embarcadero LLC, and Flamel Chase Alta Bio acquired the Ordinary Shares reported in Item 5(c) for investment only. Depending upon their evaluation of the Company's investments and prospects, and upon future developments (including, but not limited to, market for the Shares, the effective yield on the Shares, availability of funds, alternative uses of funds, and money, stock market and general economic conditions), each of the Reporting Persons may from time to time purchase the Ordinary Shares, dispose of all or a portion of the Ordinary Shares that it holds, or cease buying or selling Ordinary Shares. Any such additional purchases or sales of the Ordinary Shares may be in open market or privately negotiated transactions or otherwise. From April 9, 2003 to April 16, 2003, the funds affiliated with Alta Partners sold an aggregate of 464,000 shares of Ordinary Stock for the aggregate purchase price of $3,959,844.49. The shares were sold in broker transactions on the NASDAQ exchange. The list below provides the information in connection with the sales: Fund Date of Sale # of Shares Sold Average Per Share Sale Price Alta BioPharma Partners, L.P. 4/09/03 124,317 $8.81 4/10/03 16,782 $8.7117 4/11/03 62,158 $8.10 4/14/03 1,243 $8.8075 4/15/03 21,755 $8.5305 4/16/03 62,158 $8.35 ------- Total 288,413

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 15 of 18 Pages - -------------------------------------------------------------------------------- Fund Date of Sale # of Shares Sold Average Per Share Sale Price Flamel Chase Partners (Alta Bio), LLC. 4/09/03 70,997 $8.81 4/10/03 9,584 $8.7117 4/11/03 35,498 $8.10 4/14/03 709 $8.8075 4/15/03 12,424 $8.5305 4/16/03 35,498 $8.35 ------- Total 164,710 Alta Embarcadero BioPharma Partners, LLC. 4/09/03 4,686 $8.81 4/10/03 634 $8.7117 4/11/03 2,344 $8.10 4/14/03 48 $8.8075 4/15/03 821 $8.5305 4/16/03 2,344 $8.35 ------ Total 10,877 Item 5. Interest in Securities of the Issuer. (a) Alta BioPharma is the direct beneficial owner of 2,229,015 shares(18) of Ordinary Stock or approximately 13.05% of the shares deemed outstanding by the Company (17,083,352(19)) as of April 16, 2003. Flamel Chase Alta Bio is the direct beneficial owner of 1,272,975(20) shares of Ordinary Stock or approximately 7.6% of the shares deemed outstanding by the Company (16,703,442)(20a) as of April 16, 2003. Embarcadero LLC is the direct beneficial owner of 84,010(21) shares of Ordinary Stock or approximately .5% of the shares deemed outstanding by the Company (16,230,976)(21a) as of April 16, 2003. (b) Each entity has the power to direct the disposition of and vote the stock held by it. By virtue of the relationships previously reported under Item 2 of this Statement, Alta Management, Alta/Chase Management and Alta Partners may be deemed to have indirect beneficial ownership of the shares owned by such entities. (c) On April 9, 2003 Alta BioPharma, Flamel Chase Alta Bio, and Embarcadero LLC exercised warrants described in Item 3 of this Statement in a accordance with the terms of the warrants with the Company for aggregate consideration of $65,266.88, $37,273.04 and $2,460.08, respectively. - -------- 18 Alta BioPharma: Includes 1,343,253 shares of Ordinary Stock and Warrants to purchase 652,666 shares of Class A (BSA) and 233,096 shares of Class B (BSA). 19 Includes 16,197,590 shares of outstanding Ordinary Stock and Warrants to purchase 885,762 shares of Class A and B (BSA). 20 Flamel Chase Alta Bio: Includes 767,123 shares of Ordinary Stock and Warrants to purchase 372,734 shares of Class A (BSA) and B 133,118 shares of Class B (BSA). 20a Includes 16,197,590 shares of outstanding Ordinary Stock and Warrants to purchase 505,852 shares of Class A and B (BSA). 21 Embarcadero LLC: Includes 50,624 shares of Ordinary Stock and Warrants to purchase 24,600 shares of Class A (BSA) and 8,786 shares of Class B (BSA). 21a Includes 16,197,590 shares of outstanding Ordinary Stock and Warrants to purchase 33,386 shares of Class A and B (BSA).

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 16 of 18 Pages - -------------------------------------------------------------------------------- Except as set forth above, neither the Reporting Persons nor the Directors have effected any transaction in the Shares during the past 60 days. (d) Alta BioPharma, Flamel Chase Alta Bio and Embarcadero LLC each have the right to receive dividends and proceeds from the sale of Ordinary Shares held by it. By virtue of the relationships reported in Item 2 of this Statement, Alta Management, Alta/Chase Management and Alta Partners may be deemed to have the power to direct the receipt of dividends and the proceeds from the sale of the Ordinary Shares held by each entity. Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer. n/a Item 7. Material to be Filed as Exhibits. Exhibit A: Joint Filing Statement.

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 17 of 18 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. Date: April 16, 2003 Alta Partners Alta BioPharma Partners, L.P. By: /s/ Jean Deleage By: Alta BioPharma Management, LLC -------------------------------------------- Its General Partner Jean Deleage, President Alta BioPharma Management, LLC By: /s/ Jean Deleage -------------------------------------------- Jean Deleage, Managing Director By: /s/ Jean Deleage Flamel Chase Partners (Alta Bio), LLC -------------------------------------------- Jean Deleage, Managing Director By: Alta/Chase BioPharma Management, LLC Alta/Chase BioPharma Management, LLC Its Managing Member By: /s/ Jean Deleage By: /s/ Jean Deleage -------------------------------------------- -------------------------------------------- Jean Deleage, Member Jean Deleage, Member Alta Embarcadero BioPharma, LLC By: /s/ Jean Deleage -------------------------------------------- Jean Deleage, Member /s/ Jean Deleage /s/ Guy Nohra - -------------------------------------------- -------------------------------------------- Jean Deleage Guy Nohra /s/ Garrett Gruener /s/ Alix Marduel - -------------------------------------------- -------------------------------------------- Garrett Gruener Alix Marduel /s/ Daniel Janney - -------------------------------------------- Daniel Janney

CUSIP No. 0338488 10 9 SCHEDULE 13D Page 18 of 18 Pages - -------------------------------------------------------------------------------- EXHIBIT A Joint Filing Statement We, the undersigned, hereby express our agreement that the attached Schedule 13D is filed on behalf of each of us. Date: April 16, 2003 Alta Partners Alta BioPharma Partners, L.P. By: /s/ Jean Deleage By: Alta BioPharma Management, LLC -------------------------------------------- Its General Partner Jean Deleage, President Alta BioPharma Management, LLC By: /s/ Jean Deleage -------------------------------------------- Jean Deleage, Managing Director By: /s/ Jean Deleage Flamel Chase Partners (Alta Bio), LLC -------------------------------------------- Jean Deleage, Managing Director By: Alta/Chase BioPharma Management, LLC Alta/Chase BioPharma Management, LLC Its Managing Member By: /s/ Jean Deleage By: /s/ Jean Deleage -------------------------------------------- -------------------------------------------- Jean Deleage, Member Jean Deleage, Member Alta Embarcadero BioPharma, LLC By: /s/ Jean Deleage -------------------------------------------- Jean Deleage, Member /s/ Jean Deleage /s/ Guy Nohra - -------------------------------------------- -------------------------------------------- Jean Deleage Guy Nohra /s/ Garrett Gruener /s/ Alix Marduel - -------------------------------------------- -------------------------------------------- Garrett Gruener Alix Marduel /s/ Daniel Janney - -------------------------------------------- Daniel Janney