UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 SonoSite, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 83568G104 (CUSIP Number) December 31, 2010 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ X ] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) CUSIP No. 83568G104 1. Names of Reporting Persons. Epoch Investment Partners, Inc. I.R.S. Identification Nos. of above persons (entities only). 20-1003862 2.Check the Appropriate Box if a Member of a Group (a) [ ] (b) [ x ] 3. SEC Use Only 4. Citizenship or Place of Organization Delaware, United States Number of 5.Sole Voting Power 693,244 Shares Beneficially 6.Shared Voting Power 0 Owned by Each 7.Sole Dispositive Power 693,474 Reporting Person With 8.Shared Dispositive Power 0 9. Aggregate Amount Beneficially Owned by Each Reporting Person 693,474 10.Check if the Aggregate Amount in Row (9) Excludes Certain Shares [ ] 11.Percent of Class Represented by Amount in Row (9) 5.14% 12.Type of Reporting Person: IA Item 1(a). Name of Issuer: SonoSite, Inc. Item 1(b). Address of Issuer's Principal Executive Offices: 21919 30th Drive S.E. Bothell, Washington 98021-3904 Item 2(a). Name of Person Filing Epoch Investment Partners, Inc. Item 2(b). Address of Principal Business Office or, if None, Residence 640 Fifth Avenue 18th Floor New York, NY 10019 Item 2(c). Citizenship Delaware Item 2(d). Title of Class of Securities: Common Stock Item 2(e). CUSIP Number: 83568G104 Item 3. If this Statement is filed pursuant to Rules 13d-1(b) or 13d-2(b), check whether the person filing is a: (a) - Broker or dealer registered under Section 15 of the Act. (b) - Bank as defined in Section 3(a)(6) of the Act. (c) - Insurance company as defined in Section 3(a)(19) of the Act. (d) - Investment company registered under Section 8 of the Investment Company Act of 1940. (e) X An investment adviser in accordance with 240.13d-1(b)(1)(ii)(E); (f) - An employee benefit plan or endowment fund in accordance with 240.13d-1(b)(1)(ii)(F); (g) - A parent holding company or control person in accordance with 240.13d- 1(b)(1)(ii)(G); (h) - A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) - A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940; (j) - Group, in accordance with 240.13d-1(b)(1)(ii)(J). Item 4. Ownership: Please see Items 5 - 9 and 11 of each cover sheet. Item 5. Ownership of Five Percent or Less of a Class: Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person: Epoch Investment Partners, Inc. is the beneficial owner of 693,474 shares of the issuer's common stock on behalf of other persons known to have one or more of the following: -the right to receive dividends for such securities; -the power to direct the receipt of dividends from such securities; -the right to receive the proceeds from the sale of such securities; -the right to direct the receipt of proceeds from the sale of such securities. No such person is known to have an interest in more than 5% of the class of securities reported herein unless such person is identified below. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company: Not Applicable Item 8. Identification and Classification of Members of the Group: Not Applicable Item 9. Notice of Dissolution of Group: Not Applicable Item 10.Certification: By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. 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: February 11, 2011 By:/s/ David A. Barnett ----------------------------------------- David A. Barnett Title: Managing Attorney & Chief Compliance Officer