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 8,874 44,172 SH   SOLE   44,172 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,089 5,420 SH   OTR   0 0 5,420
BRIGHTCOVE INC COM 10921T101 20,142 2,394,978 SH   SOLE   2,394,978 0 0
BRIGHTCOVE INC COM 10921T101 9,138 1,086,600 SH   OTR   0 0 1,086,600
CECO ENVIRONMENTAL CORP COM 125141101 23,641 3,283,458 SH   SOLE   3,283,458 0 0
CECO ENVIRONMENTAL CORP COM 125141101 10,581 1,469,530 SH   OTR   0 0 1,469,530
CLOUDERA INC COM 18914U100 5,017 458,565 SH   SOLE   458,565 0 0
CLOUDERA INC COM 18914U100 2,075 189,713 SH   OTR   0 0 189,713
DOLBY LABORATORIES INC COM 25659T107 10,567 167,803 SH   SOLE   167,803 0 0
DOLBY LABORATORIES INC COM 25659T107 4,678 74,284 SH   OTR   0 0 74,284
ENERGY RECOVERY INC COM 29270J100 18,923 2,167,583 SH   SOLE   2,167,583 0 0
ENERGY RECOVERY INC COM 29270J100 8,247 944,720 SH   OTR   0 0 944,720
FARMER BROS CO COM 307675108 24,092 1,203,987 SH   SOLE   1,203,987 0 0
FARMER BROS CO COM 307675108 10,911 545,291 SH   OTR   0 0 545,291
GENTHERM INC COM 37253A103 28,412 770,807 SH   SOLE   770,807 0 0
GENTHERM INC COM 37253A103 12,549 340,446 SH   OTR   0 0 340,446
HACKETT GROUP INC COM 404609109 17,588 1,113,178 SH   SOLE   1,113,178 0 0
HACKETT GROUP INC COM 404609109 8,003 506,548 SH   OTR   0 0 506,548
MODEL N INC COM 607525102 24,540 1,399,061 SH   SOLE   1,399,061 0 0
MODEL N INC COM 607525102 11,136 634,920 SH   OTR   0 0 634,920
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 49,322 2,479,760 SH   SOLE   2,479,760 0 0
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 22,341 1,123,249 SH   OTR   0 0 1,123,249
PANHANDLE OIL AND GAS INC CL A 698477106 24,435 1,556,339 SH   SOLE   1,556,339 0 0
PANHANDLE OIL AND GAS INC CL A 698477106 11,078 705,603 SH   OTR   0 0 705,603
PURECYCLE CORP COM NEW 746228303 12,023 1,219,405 SH   SOLE   1,219,405 0 0
PURECYCLE CORP COM NEW 746228303 5,335 541,113 SH   OTR   0 0 541,113
QUANTENNA COMMUNICATIONS INC COM 74766D100 21,879 899,278 SH   SOLE   899,278 0 0
QUANTENNA COMMUNICATIONS INC COM 74766D100 10,349 425,369 SH   OTR   0 0 425,369
QUOTIENT TECHNOLOGY INC COM 749119103 3,033 307,300 SH   SOLE   307,300 0 0
QUOTIENT TECHNOLOGY INC COM 749119103 1,362 137,997 SH   OTR   0 0 137,997
SIERRA WIRELESS INC COM 826516106 20,516 1,658,526 SH   SOLE   1,658,526 0 0
SIERRA WIRELESS INC COM 826516106 9,813 793,254 SH   OTR   0 0 793,254
SONOS INC COM 83570H108 2,698 262,215 SH   SOLE   262,215 0 0
SONOS INC COM 83570H108 1,121 108,960 SH   OTR   0 0 108,960
SURMODICS INC COM 868873100 24,115 554,628 SH   SOLE   554,628 0 0
SURMODICS INC COM 868873100 10,897 250,630 SH   OTR   0 0 250,630
TPI COMPOSITES INC COM 87266J104 34,562 1,207,627 SH   SOLE   1,207,627 0 0
TPI COMPOSITES INC COM 87266J104 15,513 542,033 SH   OTR   0 0 542,033
TECHTARGET INC COM 87874R100 3,721 228,675 SH   SOLE   228,675 0 0
TECHTARGET INC COM 87874R100 1,607 98,741 SH   OTR   0 0 98,741
VISTEON CORP COM 92839U206 20,903 310,360 SH   SOLE   310,360 0 0
VISTEON CORP COM 92839U906 8,997 133,582 SH   OTR   0 0 133,582
XPERI CORP COM 98421B100 7,501 320,535 SH   SOLE   320,535 0 0
XPERI CORP COM 98421B100 528 22,582 SH   OTR   0 0 22,582