UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 13F
Form 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: 3/31/2013
Check here if Amendment []; Amendment Number:
-------
This Amendment (Check only one.): [] is a restatement.
[] adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Shannon River Fund Management Co., LLC
Address: 850 Third Ave, 11th Floor
New York, New York 10022
Form 13F File Number: 28-12219
The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this submission.
Persons Signing this Report on Behalf of Reporting Manager:
Name: Spencer M. Waxman
Title: Managing Member
Phone: (212) 331-6555
Signature, Place, and Date of Signing:
/s/ Spencer M. Waxman New York, New York 5/14/2013
--------------------------------- --------------------------------- ----------
[Signature] [City, State] [Date]
Report Type (Check only one):
[X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting
manager are reported in this report.)
[ ] 13F NOTICE. (Check here if no holdings reported are in this report,
and all holdings are reported by other reporting manager(s).)
[ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for
this reporting manager are reported in this report and a portion are
reported by other reporting manager(s).)
List of Other Managers Reporting for this Manager:
Form 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 1
Form 13F Information Table Entry Total: 49
Form 13F Information Table Value Total: $ 858,219
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(In Thousands)
List of Other Included Managers:
Provide a numbered list of the name(s) and 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.
No. Form 13F File Number Name
01 28-12497 Shannon River Capital Management, LLC
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FORM 13F INFORMATION TABLE
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
------------------------------ --------------- --------- -------- ------------------ ---------- -------- ---------------------
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE
------------------------------ --------------- --------- -------- --------- --- ---- ---------- -------- --------- ------ ----
ACME PACKET INC COM 004764106 11,109 380,000 SH OTHER 01 380,000 0 0
AMERICAN TOWER CORP NEW COM 03027X100 61,536 800,000 SH OTHER 01 800,000 0 0
AMERISOURCEBERGEN CORP COM 03073E105 21,866 425,000 SH OTHER 01 425,000 0 0
ANDINA ACQUISITION CORP UNIT 99/99/9999 G0440W118 1,003 100,000 SH OTHER 01 100,000 0 0
CBS CORP NEW CL B 124857202 21,711 465,000 SH OTHER 01 465,000 0 0
CINEMARK HOLDINGS INC COM 17243V102 12,659 430,000 SH OTHER 01 430,000 0 0
COGENT COMM GROUP INC COM NEW 19239V302 19,937 755,200 SH OTHER 01 755,200 0 0
DESCARTES SYS GROUP INC COM 249906108 6,534 695,100 SH OTHER 01 695,100 0 0
DREAMWORKS ANIMATION SKG INC CL A 26153C103 7,300 385,000 SH OTHER 01 385,000 0 0
EBAY INC COM 278642103 14,911 275,000 SH OTHER 01 275,000 0 0
ELECTRONIC ARTS INC COM 285512109 9,735 550,000 SH OTHER 01 550,000 0 0
EQUINIX INC COM NEW 29444U502 34,610 160,000 SH OTHER 01 160,000 0 0
EXTREME NETWORKS INC COM 30226D106 6,400 1,899,200 SH OTHER 01 1,899,200 0 0
GOOGLE INC CL A 38259P508 24,620 31,000 SH OTHER 01 31,000 0 0
GROUPON INC COM CL A 399473107 4,896 800,000 SH OTHER 01 800,000 0 0
HAWAIIAN TELCOM HOLDCO INC COM 420031106 6,306 273,344 SH OTHER 01 273,344 0 0
HEARTLAND PMT SYS INC COM 42235N108 623 18,900 SH OTHER 01 18,900 0 0
IMMERSION CORP COM 452521107 22,815 1,943,361 SH OTHER 01 1,943,361 0 0
INFOBLOX INC COM 45672H104 5,968 275,000 SH OTHER 01 275,000 0 0
INTERCONTINENTALEXCHANGE INC COM 45865V100 28,537 175,000 SH OTHER 01 175,000 0 0
INTERDIGITAL INC COM 45867G101 31,580 659,707 SH OTHER 01 659,707 0 0
INTERXION HOLDING N.V SHS N47279109 36,379 1,502,035 SH OTHER 01 1,502,035 0 0
LIVEPERSON INC COM 538146101 4,953 364,715 SH OTHER 01 364,715 0 0
LORAL SPACE & COMMUNICATNS INC COM 543881106 38,530 622,656 SH OTHER 01 622,656 0 0
LUMOS NETWORKS CORP CMN COM 550283105 14,154 1,050,000 SH OTHER 01 1,050,000 0 0
MADISON SQUARE GARDEN CO CL A 55826P100 42,849 743,900 SH OTHER 01 743,900 0 0
MEDIDATA SOLUTIONS INC COM 58471A105 6,088 105,000 SH OTHER 01 105,000 0 0
NETAPP INC COM 64110D104 12,810 375,000 SH OTHER 01 375,000 0 0
NETFLIX INC COM 64110L106 10,410 55,000 SH OTHER 01 55,000 0 0
NEUSTAR INC CL A 64126X201 5,816 125,000 SH OTHER 01 125,000 0 0
NEUSTAR INC CL A 64126X201 287 1,711 SH PUT OTHER 01 1,711 0 0
PANDORA MEDIA INC COM 698354107 7,250 512,000 SH OTHER 01 512,000 0 0
PDF SOLUTIONS INC COM 693282105 21,551 1,345,285 SH OTHER 01 1,345,285 0 0
REGAL ENTMT GROUP CL A 758766109 22,199 1,331,700 SH OTHER 01 1,331,700 0 0
ROGERS COMMUNICATIONS INC CL B 775109200 42,461 831,600 SH OTHER 01 831,600 0 0
SCIENTIFIC GAMES CORP CL A 80874P109 81 9,200 SH OTHER 01 9,200 0 0
7 DAYS GROUP HLDGS LTD ADR 81783J101 4,468 332,700 SH OTHER 01 332,700 0 0
SIRIUS XM RADIO INC COM 82967N108 26,950 8,750,000 SH OTHER 01 8,750,000 0 0
STAMPS COM INC COM NEW 852857200 13,818 553,400 SH OTHER 01 553,400 0 0
TEMPUR PEDIC INTL INC COM 88023U101 30,522 615,000 SH OTHER 01 615,000 0 0
TIME WARNER INC COM NEW 887317303 23,912 415,000 SH OTHER 01 415,000 0 0
TIVO INC COM 888706108 44,705 3,608,161 SH OTHER 01 3,608,161 0 0
TW TELECOM INC COM 87311L104 29,435 1,168,500 SH OTHER 01 1,168,500 0 0
UNWIRED PLANET INC NEW COM 91531F103 9,796 4,412,700 SH OTHER 01 4,412,700 0 0
WEB COM GROUP INC COM 94733A104 8,213 480,827 SH OTHER 01 480,827 0 0
WEBSENSE INC COM 947684106 16,744 1,116,272 SH OTHER 01 1,116,272 0 0
WI-LAN INC COM 928972108 3,975 998,700 SH OTHER 01 998,700 0 0
YAHOO INC COM 984332106 17,647 750,000 SH OTHER 01 750,000 0 0
ZYNGA INC CL A 98986T108 7,560 2,250,000 SH OTHER 01 2,250,000 0 0