UNITED STATES SECURITIES & EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* Solitario Resources Corp. (Name of Issuer) Common Stock (Title of Class of Securities) 83422R106 (CUSIP Number) Michael Emanuel, Esq. c/o Loeb Partners Corporation 61 Broadway, N.Y., N.Y., 10006 (212) 483-7047 (Name, address and Telephone Number of Person Authorized to Receive Notices and Communications) April 24, 2007 (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 statement [ ]. (A fee is not required only if the following reporting person: (1) has a previous statement on file reporting beneficial ownership of more than five percent of the class of securities described is 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 disclosures provided in a prior cover page. The information required on the remained 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). SCHEDULE 13D CUSIP NO. 83422R106 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Loeb Partners Corporation 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC, O 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED [ ] PURSUANT TO ITEMS 2(d) or 2(e) 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF 7 SOLE VOTING POWER SHARES 46,015 Shares of Common stock BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 45,501 Shares of Common stock EACH 9 SOLE DISPOSITIVE POWER REPORTING 46,015 Shares of Common stock PERSON WITH 10 SHARED DISPOSITIVE POWER 45,501 Shares of Common stock 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 91,606 Shares of Common stock 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.32% 14 TYPE OF REPORTING PERSON* CO, BD, IA SCHEDULE 13D CUSIP NO. 83422R106 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Loeb Arbitrage Fund 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS WC, O 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED [ ] PURSUANT TO ITEMS 2(d) or 2(e) 6 CITIZENSHIP OR PLACE OF ORGANIZATION New York NUMBER OF 7 SOLE VOTING POWER SHARES 965,520 Shares of Common stock BENEFICIALLY 8 SHARED VOTING POWER OWNED BY ----- EACH 9 SOLE DISPOSITIVE POWER REPORTING 965,520 Shares of Common stock PERSON WITH 10 SHARED DISPOSITIVE POWER ----- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 965,520 Shares of Common stock 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.35% 14 TYPE OF REPORTING PERSON* PN, BD SCHEDULE 13D CUSIP NO. 83422R106 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Loeb Offshore Fund Ltd. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC, O 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED [ ] PURSUANT TO ITEMS 2(d) or 2(e) 6 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF 7 SOLE VOTING POWER SHARES 247,408 Shares of Common stock BENEFICIALLY 8 SHARED VOTING POWER OWNED BY -------- EACH 9 SOLE DISPOSITIVE POWER REPORTING 247,408 Shares of Common stock PERSON WITH 10 SHARED DISPOSITIVE POWER ------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 247,408 Shares of Common stock 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.86% 14 TYPE OF REPORTING PERSON* CO SCHEDULE 13D CUSIP NO. 83422R106 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Loeb Marathon Fund LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC, O 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED [ ] PURSUANT TO ITEMS 2(d) or 2(e) 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF 7 SOLE VOTING POWER SHARES 132,067 Shares of Common stock BENEFICIALLY 8 SHARED VOTING POWER OWNED BY -------- EACH 9 SOLE DISPOSITIVE POWER REPORTING 132,067 Shares of Common stock PERSON WITH 10 SHARED DISPOSITIVE POWER ------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 132,067 Shares of Common Stock 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.46% 14 TYPE OF REPORTING PERSON* PN SCHEDULE 13D CUSIP NO. 83422R106 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Loeb Marathon Offshore Fund, Ltd. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] 3 SEC USE ONLY 4 SOURCE OF FUNDS* WC, O 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED [ ] PURSUANT TO ITEMS 2(d) or 2(e) 6 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF 7 SOLE VOTING POWER SHARES 94,193 Shares of Common stock BENEFICIALLY 8 SHARED VOTING POWER OWNED BY -------- EACH 9 SOLE DISPOSITIVE POWER REPORTING 94,193 Shares of Common stock PERSON WITH 10 SHARED DISPOSITIVE POWER ------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 94,193 Shares of Common Stock 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.33% 14 TYPE OF REPORTING PERSON* CO Item 1. Security and Issuer. ------ ------------------- This statement refers to the Common Stock of Solitario Resources Corp., Suite 390, 4251 Kipling Street, Wheat Ridge, CO., 80033. Item 2. Identity and Background. ------ ----------------------- Loeb Arbitrage Fund ("LAF"), 61 Broadway, New York, New York, 10006, is a New York limited partnership. It is a registered broker/dealer. Its general partner is Loeb Arbitrage Management, Inc., ("LAM"), a Delaware corporation, with the same address. Its President is Gideon J. King. The other officers of LAM are Thomas L. Kempner, Chairman of the Board, President, Peter A. Tcherepnine, Vice President, Edward J. Campbell, Vice President. Loeb Partners Corporation ("LPC"), 61 Broadway, New York, New York, 10006, is a Delaware corporation. It is a registered broker/dealer and a registered investment adviser. Thomas L. Kempner is its President and a director and its Chief Executive Officer. Norman N. Mintz is a Vice President and also a director. Gideon J. King is Executive Vice President. Loeb Holding Corporation ("LHC"), a Maryland corporation, 61 Broadway, New York, New York, 10006 is the sole stockholder of LAM and LPC. Thomas L. Kempner is its President and a director as well as its Chief Executive Officer and majority stockholder. Norman N. Mintz and Peter A. Tcherepnine are also directors. Loeb Offshore Fund, Ltd., ("LOF") is a Cayman Islands exempted company. Loeb Offshore Management, LLC ("LOM") is a Delaware limited liability company, a registered investment adviser and is wholly owned by Loeb Holding Corporation. It is the investment adviser of LOF. Gideon J. King and Thomas L. Kempner are Directors of LOF and Managers of LOM. Loeb Marathon Fund ("LMF") is a Delaware limited partnership whose general partner is LAM. Loeb Marathon Offshore Fund Ltd. ("LMOF") is a Cayman Islands exempted company. LOM is the investment adviser of LMOF. All of the individuals named are United States citizens. None have been, within the last five years, convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding been or are 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 violations with respect to such laws. Item 3. Source and Amount of Funds or Other Compensation. ------ ------------------------------------------------ Shares of Common Stock were acquired by LAF, LPC, and LOF in margin accounts maintained with Bear Stearns Securities Corp. Item 4. Purpose of Transaction. ------ ---------------------- LAF, LPC** and LOF ("Loeb") have acquired shares of Common Stock for investment purposes. Loeb reserves the right, consistent with applicable law, to acquire additional securities of the Issuer (whether through open market purchases, block trades, private acquisitions, tender or exchange offers or otherwise). Loeb intends to review its investment in the Issuer on a continuing basis and may engage in discussions with management or the Board of Directors of the Issuer concerning the business and future plans of the Issuer. Depending on various factors, including, without limitation, the Issuer's financial position and investment strategy, the price levels of the Common Stock of the Issuer, conditions in the securities markets and general economic and industry conditions, Loeb may in the future take such actions with respect to its investment in the Issuer as it deems appropriate including, without limitation, seeking Board representations, making proposals to the Issuer concerning the capitalization of the Issuer, purchasing additional Common Stock and other securities of the Issuer, selling some or all of its Common Stock, engaging in short selling of or any hedging or similar transaction with respect to the Common Stock of the Issuer or changing its intention partially or entirely with respect to any and all matters referred to in Item 4. Item 5. Interest in Securities of the Issuer. ------ ------------------------------------ (a) The persons reporting hereby owned the following shares of Common Stock as of May 8, 2007. Shares of Common Stock Loeb Arbitrage Fund 965,520 Loeb Partners Corporation** 91,606 Loeb Offshore Fund Ltd. 247,408 Loeb Marathon Fund LP 132,067 Loeb Marathon Offshore Fund, Ltd. 94,193 ------- 1,530,704 The total shares of Common Stock constitutes 5.31% the 28,840,000 outstanding shares of Common Stock as reported by the issuer. ------------------------- **Including shares of Common Stock purchased for the account of one customer of Loeb Partners Corporation as to which it has investment discretion. (b) See paragraph (a) above. (c) The following purchases of Common Stock have been made in the last sixty (60) days by the following: Purchases of Common Stock Holder Date Shares Average Price Loeb Partners Corp.** 05-01-07 6900 $4.90 05-02-07 3116 4.97 05-02-07 16700 4.95 05-02-07 2400 4.91 05-03-07 7300 5.01 05-04-07 255 5.00 05-04-07 2000 5.12 05-04-07 395 5.28 05-07-07 1100 5.17 05-08-07 5335 5.15 Holder Date Shares Average Price Loeb Arbitrage Fund 04-13-07 7055 $4.40 04-16-07 4000 4.51 04-17-07 600 4.48 04-17-07 7700 5.15 04-18-07 160 4.55 04-18-07 9885 5.21 04-19-07 2087 5.16 04-23-07 2810 4.63 04-23-07 12805 4.77 04-23-07 13690 4.73 04-24-07 9200 4.79 05-04-07 6975 4.97 05-04-07 10680 5.08 Holder Date Shares Average Price Loeb Offshore Fund 04-18-07 40 $4.55 04-18-07 115 5.21 04-19-07 513 5.16 04-23-07 3360 4.73 04-23-07 690 4.64 04-23-07 3145 4.77 05-03-07 200 5.01 05-04-07 1700 4.97 05-04-07 3625 5.08 Holder Date Shares Average Price Loeb Marathon Fund LP 04-13-07 814 $4.40 04-16-07 1168 4.51 04-16-07 292 4.48 04-23-07 1838 4.73 04-23-07 1721 4.78 Holder Date Shares Average Price Loeb Marathon Offshore Fund Ltd. 04-13-07 431 $4.40 04-16-07 832 4.51 04-16-07 208 4.48 04-23-07 1229 4.77 04-23-07 1312 4.73 -------------------- **Including shares of Common Stock purchased for the account of one customer of Loeb Partners Corporation as to which it has investment discretion. All reported transactions were effected on AMEX. (d) Not applicable. (e). Not applicable. Item 6.Contracts, Arrangements, Understandings or Relationships with Respect to the Issuer. None. Item 7. Materials to be Filed as Exhibits. None. 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. May 18, 2007 Loeb Partners Corporation By: /s/ Gideon J. King Executive Vice President May 18, 2007 Loeb Arbitrage Fund By: Loeb Arbitrage Management, Inc., G.P. By: /s/ Gideon J. King President May 18, 2007 Loeb Offshore Fund Ltd. By: /s/ Gideon J. King Director May 18, 2007 Loeb Marathon Fund LP By: Loeb Arbitrage Management, Inc., G.P. By: /s/ Gideon J. King President May 18, 2007 Loeb Marathon Offshore Fund Ltd. By: /s/ Gideon J. King Director