-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, DzVOwZC5lZ0XqC8eucQRADDlnobg/JMp5WdExrWDT7qIKRq0mgi2yYu3y1kmNfHL XLiuvO+pqO9vfls96IQFDQ== 0001047469-02-008106.txt : 20021223 0001047469-02-008106.hdr.sgml : 20021223 20021223163820 ACCESSION NUMBER: 0001047469-02-008106 CONFORMED SUBMISSION TYPE: SC 13D PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20021223 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: TANNEBAUM LLC CENTRAL INDEX KEY: 0001203994 IRS NUMBER: 030400032 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D MAIL ADDRESS: STREET 1: 875 N. MICHIGAN AVENUE STREET 2: SUITE 2930 CITY: CHICAGO STATE: IL ZIP: 60611 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: PHOTOGEN TECHNOLOGIES INC CENTRAL INDEX KEY: 0000761237 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 364010347 STATE OF INCORPORATION: NV FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D SEC ACT: 1934 Act SEC FILE NUMBER: 005-53647 FILM NUMBER: 02867265 BUSINESS ADDRESS: STREET 1: 7327 OAK RIDGE HIGHWAY STREET 2: SUITE B CITY: KNOXVILLE STATE: TN ZIP: 37931 BUSINESS PHONE: 4237694011 MAIL ADDRESS: STREET 1: 7327 OAK RIDGE HIGHWAY STREET 2: SUITE B CITY: KNOXVILLE STATE: TN ZIP: 37931 SC 13D 1 a2091744zsc13d.htm SC 13D
QuickLinks -- Click here to rapidly navigate through this document

INFORMATION REQUIREMENTS FOR FILINGS UPON ACQUISITION
OF FIVE PERCENT OF A CLASS OF EQUITY SECURITIES SUBJECT
TO THE REPORTING REQUIREMENTS OF THE 1934 ACT
SCHEDULE 13D

UNDER THE SECURITIES EXCHANGE ACT OF 1934*

PHOTOGEN TECHNOLOGIES, INC.
(Name of Issuer)

COMMON STOCK
(Title of Class of Securities)

71932A-10-1
(CUSIP Number)

Tannebaum, LLC
875 North Michigan Avenue, Suite 2930, Chicago, Illinois 60611 (312/397-2626)
(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

March 6, 2002
(Date of Event Which Requires Filing of this Statement)

        If the 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 o.

        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 disclosures provided in a proper 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 ("Act") 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).

1


CUSIP No. 71932A-10-1


(1)   Names of Reporting Persons.
S.S. or I.R.S. Identification
Nos. of Above Persons
  Tannebaum, LLC

(2)   Check the Appropriate Box if a Member of a Group (See Instructions)   (a)    o
(b)    ý


(3)   SEC Use Only    


(4)   Source of Funds (See Instructions)   OO


(5)   Check if Disclosure of Legal Proceedings is
Required Pursuant to Items 2(d) or 2(e)
   


(6)   Citizenship or Place of Organization   Delaware

Number of Shares Beneficially Owned
by Each Reporting Person With
  (7)   Sole Voting Power   4,116,921
   
    (8)   Shared Voting Power   0

 

 


    (9)   Sole Dispositive Power   4,116,921

 

 


    (10)   Shared Dispositive Power   0

(11)   Aggregate Amount Beneficially Owned By Each Reporting Person   4,116,921

(12)   Check if the Aggregate Amount in Row (11)
Excludes Certain Shares (See Instructions)
   


(13)   Percent of Class Represented by Amount in Row (11)   10.6%


(14)   Type of Reporting Person (See Instructions)   OO


2



Item 1.    SECURITY AND ISSUER.

        This Schedule 13D relates to common stock ("Common Stock") of Photogen Technologies, Inc., a Nevada corporation (the "Issuer"). The principal executive offices of the Issuer are located at 140 Union Square Drive, New Hope, PA 18938.


Item 2.    IDENTITY AND BACKGROUND.

        Set forth below is the following information with respect to the filing on this Schedule 13D: (a) name; (b) business address; (c) principal occupation and name, business and address of employer; (d) information concerning criminal convictions during the last five years; (e) information concerning civil or administrative proceedings under state or federal securities laws during the past five years with respect to any state or federal securities laws; and (f) citizenship.

    a)
    Tannebaum, LLC
    b)
    875 North Michigan Avenue, Suite 2930, Chicago, IL 60611
    c)
    not applicable
    d)
    No criminal convictions (1)
    e)
    No adverse civil judgments for violations of securities laws (1)
    f)
    not applicable

(1)
During the last five years, neither the filing person nor any person described in General Instruction C to Schedule 13D with respect to a filing person that is an entity has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors), nor have such persons been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction that resulted in his becoming 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.


Item 3.    SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

        On March 6, 2002, Tannebaum, LLC received shares of the Issuer from the Theodore Tannebaum Trust, U/A/D March 5, 1990, most recently restated in its entirety on February 20, 1999, and further amended on January 31, 2000, in exchange for the Trust's membership interest in Tannebaum, LLC.


Item 4.    PURPOSE OF TRANSACTION.

        All shares of Common Stock of Issuer received by Tannebaum, LLC were acquired for its own account for investment purposes.

        The Issuer has agreed to split off its photodynamic therapy and laser device business to five founding shareholders in exchange for all of their Common Stock, which represents 52.9% of the Issuer's outstanding shares. The reporting person has agreed to vote its shares in favor of that transaction.

        The Issuer has also signed a financing agreement to sell $16.25 million of Common Stock to a group of venture capital funds led by Mi3 L.P. of Wellesley, MA and including Tannebaum, LLC, Oxford Bioscience Partners IV L.P. and New England Partners Capital, L.P. The reporting person has agreed to vote its shares in favor of that transaction. The financing agreements include a voting agreement pursuant to which (among other things) the reporting person agrees to maintain the Issuer's Board of Directors at seven members and to vote to elect certain persons to the Board.

3



        Except as described above, the reporting person has no current plans or proposals that relate to or would result in:

    1.
    The acquisition of additional securities of the Issuer, or the disposition of securities of the Issuer;

    2.
    An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries;

    3.
    A sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries;

    4.
    Any change in the present board of directors or management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the board;

    5.
    Any material change in the present capitalization or dividend policy of the Issuer;

    6.
    Any other material change in the Issuer's business or corporate structure;

    7.
    Changes in the Issuer's charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person;

    8
    Causing a class of securities of the Issuer to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association;

    9.
    A class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Exchange Act; or

    10.
    Any action similar to any of those enumerated above.


Item 5.    INTEREST IN SECURITIES OF THE ISSUER.

Name of Item or Person

  Common Stock
Beneficially Owned

  % of Class (1)
  Voting Power

Tannebaum, LLC

 

4,116,921

 

10.6%

 

Sole (2)

(1)
All percentages in this table are based, pursuant to Rule 13d-1(e) of the Securities Exchange Act of 1934, on the 38,842,298 shares of Common Stock of the Issuer outstanding as of June 30, 2002.

(2)
Excludes shares of Common Stock owned by other persons that are subject to the voting agreement described in Item 4, above.


Item 6.    CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR
RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER.

        The split off transaction, the financing transaction and related voting agreement with the reporting person are described in Item 4, above. There are no other contracts, arrangements or understandings with Tannebaum, LLC made or entered into specifically with respect to holding, voting or disposing of the Common Stock of the Issuer.

4



Item 7.    MATERIAL TO BE FILED AS EXHIBITS.

        The following exhibits are filed with this Schedule 13D:

1.
Separation Agreement entered into as of July 29, 2002 by and among the following: Craig Dees, Ph.D. and Dees Family Foundation, Eric A. Wachter, Ph.D. and Eric A. Wachter 1998 Charitable Remainder Unitrust, Timothy D. Scott, Ph.D. and Scott Family Investment Limited Partnership, Walter Fisher, Ph.D., Fisher Family Investment Limited Partnership, and Walt Fisher 1998 Charitable Remainder Unitrust, and John A. Smolik and Smolik Family LLP, Photogen Technologies, Inc., Photogen, Inc., Robert J. Weinstein, M.D., Stuart P. Levine and Tannebaum, LLC (incorporated by reference to Schedule A to the DEFM 14A filing dated September 12, 2002).

2.
Common Stock Purchase Agreement dated as of August 2, 2002 entered into by and among Photogen Technologies, Inc., Mi3 L.P., Oxford Bioscience Partners IV L.P., New England Partners Capital, L.P. and Tannebaum LLC (incorporated by reference to Schedule C to the DEFM 14A filing dated September 12, 2002).

3.
Voting, Drag-Along and Right of First Refusal Agreement by and among Robert J. Weinstein, M.D. (individually and as Director of the Robert and Lois Weinstein Family Foundation, Inc. and as Trustee of the Robert and Lois Weinstein Joint Revocable Trust), Stuart Levine (individually and as Trustee of the Theodore Tannebaum Trust), Tannebaum LLC, Mi3 L.P., Oxford Bioscience and New England Partners Capital, L.P. (incorporated by reference to Schedule G to the DEFM 14A filing dated September 12, 2002).

5



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.

Dated: October 22, 2002    
    /s/  ROBERT J. WEINSTEIN, M.D.      
Robert J. Weinstein, M.D., as co-manager of STRO, LLC,
the manager of reporting person

 

 

/s/  
STUART P. LEVINE      
Stuart P. Levine, as co-manager of STRO, LLC,
the manager of reporting person

6




QuickLinks

SIGNATURE
-----END PRIVACY-ENHANCED MESSAGE-----