Dark
Light
System
Institutional Investment Manager
Granahan Investment Management, LLC
Granahan Investment Management, LLC (CIK: 0001026710) incorporated in Massachusetts, located at 404 Wyman Street, Waltham, MA. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q1)
Portfolio Summary: 231 holdings with a total value of $3,494,473,000.
#
Name
Shares
Value ($)
%
Options
Notes
51 NEKTAR THERAPEUTICS COM 2,216,945 24,386,000 0.70%
52 JOHN BEAN TECHNOLOGIES CORP COM 674,068 24,078,000 0.69%
53 COGNEX CORP 485,392 24,071,000 0.69%
54 IROBOT CORP 727,339 23,733,000 0.68%
55 PERFICIENT INC COM 1,135,710 23,498,000 0.67%
56 TERADYNE INC 1,239,478 23,364,000 0.67%
57 VERTEX PHARMACEUTICALS INC 194,100 22,898,000 0.66%
58 QUALYS INC 467,685 21,738,000 0.62%
59 Esperion Therapeutics Inc 232,780 21,555,000 0.62%
60 SPECTRANETICS CORP 592,000 20,578,000 0.59%
61 QLIK TECHNOLOGIES INC COM 655,000 20,390,000 0.58%
62 DOUGLAS DYNAMICS INC 884,359 20,199,000 0.58%
63 Francesca's Holdings Corp 1,107,397 19,712,000 0.56%
64 MODINE MFG CO COM 1,430,584 19,270,000 0.55%
65 HOMEAWAY INC 631,187 19,043,000 0.54%
66 PROOFPOINT INC 318,652 18,871,000 0.54%
67 CHURCHILL DOWNS INC 160,090 18,406,000 0.53%
68 CYNOSURE CL A ORD 592,508 18,172,000 0.52%
69 MICROSEMI CORP 510,100 18,058,000 0.52%
70 MATIV HOLDINGS INC COM 388,706 17,927,000 0.51%
71 ACCELERON PHARMA INC 469,776 17,880,000 0.51%
72 IMPERVA INC 413,680 17,664,000 0.51%
73 PROASSURANCE CORP. 697,100 17,225,000 0.49%
74 INVENSENSE INC 1,088,385 16,554,000 0.47%
75 DECKERS OUTDOOR CORP 227,049 16,545,000 0.47%
76 HIBBETT INC COM 335,985 16,483,000 0.47%
77 GRUBHUB INC 359,642 16,324,000 0.47%
78 SCOTTS MIRACLE-GRO CO 240,900 16,181,000 0.46%
79 TYLER TECHNOLOGIES INC 132,650 15,988,000 0.46%
80 ARUBA NETWORKS INC 650,500 15,931,000 0.46%
81 TIVO INC 1,461,170 15,503,000 0.44%
82 CLEAN HARBORS INC 266,900 15,155,000 0.43%
83 BROCADE COMMUNICATIONS SYS I 1,269,100 15,058,000 0.43%
84 MONOTYPE IMAGING HLDGS INC 460,704 15,037,000 0.43%
85 2U, Inc. 576,862 14,756,000 0.42%
86 SAFEGUARD SCIENTIFICS INCORPORATED COM NEW 810,880 14,661,000 0.42%
87 CONMED CORP 290,164 14,650,000 0.42%
88 MONOLITHIC PWR SYS INC 272,236 14,333,000 0.41%
89 GRAND CANYON ED INC 330,700 14,319,000 0.41%
90 OPUS BK IRVINE CALIF COM 463,135 14,302,000 0.41%
91 MOBILE MINI INC 331,600 14,139,000 0.40%
92 PAYLOCITY HOLDING CORPORATION COM 493,306 14,128,000 0.40%
93 SYNCHRONOSS TECHNOLOGIES INC 295,900 14,043,000 0.40%
94 COMFORT SYS USA INC 652,180 13,722,000 0.39%
95 VASCULAR SOLUTIONS 452,354 13,715,000 0.39%
96 CELADON GROUP INC 484,024 13,175,000 0.38%
97 MARINEMAX INC COM 496,341 13,158,000 0.38%
98 ROCKWELL MED INC 1,201,945 13,137,000 0.38%
99 ZAFGEN INC COM 327,727 12,981,000 0.37%
100 EXACT SCIENCES CORP 578,110 12,730,000 0.36%
Page 2 of 5

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001026710-15-000004, filed 2015.04.10).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.