The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
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 MANAGER SOLE SHARED NONE
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,416 44,172 SH   SOLE   44,172 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,219 5,720 SH   OTR   0 0 5,720
BRIGHTCOVE INC COM 10921T101 24,761 2,396,978 SH   SOLE   2,396,978 0 0
BRIGHTCOVE INC COM 10921T101 11,362 1,099,909 SH   OTR   0 0 1,099,909
CECO ENVIRONMENTAL CORP COM 125141101 30,334 3,163,101 SH   SOLE   3,163,101 0 0
CECO ENVIRONMENTAL CORP COM 125141101 14,320 1,493,176 SH   OTR   0 0 1,493,176
DOLBY LABORATORIES INC COM 25659T107 10,856 168,051 SH   SOLE   168,051 0 0
DOLBY LABORATORIES INC COM 25659T107 4,973 76,984 SH   OTR   0 0 76,984
ENERGY RECOVERY INC COM 29270J100 22,632 2,171,956 SH   SOLE   2,171,956 0 0
ENERGY RECOVERY INC COM 29270J100 10,181 977,062 SH   OTR   0 0 977,062
FARMER BROS CO COM 307675108 22,232 1,358,122 SH   SOLE   1,358,122 0 0
FARMER BROS CO COM 307675108 10,054 614,197 SH   OTR   0 0 614,197
GENTHERM INC COM 37253A103 33,153 792,574 SH   SOLE   792,574 0 0
GENTHERM INC COM 37253A103 15,030 359,322 SH   OTR   0 0 359,322
HACKETT GROUP INC COM 404609109 18,741 1,116,178 SH   SOLE   1,116,178 0 0
HACKETT GROUP INC COM 404609109 8,732 520,097 SH   OTR   0 0 520,097
MODEL N INC COM 607525102 26,755 1,372,060 SH   SOLE   1,372,060 0 0
MODEL N INC COM 607525102 12,452 638,576 SH   OTR   0 0 638,576
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 46,067 2,735,593 SH   SOLE   2,735,593 0 0
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 20,243 1,202,050 SH   OTR   0 0 1,202,050
PANHANDLE OIL AND GAS INC CL A 698477106 20,952 1,606,745 SH   SOLE   1,606,745 0 0
PANHANDLE OIL AND GAS INC CL A 698477106 9,702 744,051 SH   OTR   0 0 744,051
PURECYCLE CORP COM NEW 746228303 12,519 1,181,081 SH   SOLE   1,181,081 0 0
PURECYCLE CORP COM NEW 746228303 5,347 504,415 SH   OTR   0 0 504,415
QUOTIENT TECHNOLOGY INC COM 749119103 7,954 740,561 SH   SOLE   740,561 0 0
QUOTIENT TECHNOLOGY INC COM 749119103 3,455 321,703 SH   OTR   0 0 321,703
SIERRA WIRELESS INC COM 826516106 29,983 2,482,044 SH   SOLE   2,482,044 0 0
SIERRA WIRELESS INC COM 826516106 13,378 1,107,432 SH   OTR   0 0 1,107,432
SONOS INC COM 83570H108 7,063 622,817 SH   SOLE   622,817 0 0
SONOS INC COM 83570H108 2,907 256,324 SH   OTR   0 0 256,324
SURMODICS INC COM 868873100 27,629 640,013 SH   SOLE   640,013 0 0
SURMODICS INC COM 868873100 12,394 287,155 SH   OTR   0 0 287,155
TPI COMPOSITES INC COM 87266J104 33,815 1,367,905 SH   SOLE   1,367,905 0 0
TPI COMPOSITES INC COM 87266J104 14,594 590,380 SH   OTR   0 0 590,380
VISTEON CORP COM 92839U206 31,552 538,616 SH   SOLE   538,616 0 0
VISTEON CORP COM 92839U906 13,263 226,405 SH   OTR   0 0 226,405