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
ACXIOM CORP COM 005125109 659 23,903 SH   SOLE   23,903 0 0
ACXIOM CORP COM 005125109 226 8,215 SH   OTR   0 0 8,215
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,538 32,982 SH   SOLE   32,982 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 198 1,000 SH   OTR   0 0 1,000
CECO ENVIRONMENTAL CORP COM 125141101 13,920 2,713,458 SH   SOLE   2,713,458 0 0
CECO ENVIRONMENTAL CORP COM 125141101 5,779 1,126,516 SH   OTR   0 0 1,126,516
CALIX INC COM 13100M509 2,036 342,226 SH   SOLE   342,226 0 0
CALIX INC COM 13100M509 823 138,435 SH   OTR   0 0 138,435
DOLBY LABORATORIES INC COM 25659T107 7,804 125,874 SH   SOLE   125,874 0 0
DOLBY LABORATORIES INC COM 25659T107 3,270 52,747 SH   OTR   0 0 52,747
FARMER BROS CO COM 307675108 23,145 719,899 SH   SOLE   719,899 0 0
FARMER BROS CO COM 307675108 9,895 307,782 SH   OTR   0 0 307,782
GENTHERM INC COM 37253A103 18,064 568,938 SH   SOLE   568,938 0 0
GENTHERM INC COM 37253A103 7,426 233,889 SH   OTR   0 0 233,889
HACKETT GROUP INC COM 404609109 12,936 823,419 SH   SOLE   823,419 0 0
HACKETT GROUP INC COM 404609109 5,277 335,869 SH   OTR   0 0 335,869
INTEGRATED DEVICE TECHNOLOGY COM 458118106 32,057 1,078,258 SH   SOLE   1,078,258 0 0
INTEGRATED DEVICE TECHNOLOGY COM 458118106 13,335 448,527 SH   OTR   0 0 448,527
KMG CHEMICALS INC COM 482564101 26,036 394,012 SH   SOLE   394,012 0 0
KMG CHEMICALS INC COM 482564101 10,926 165,340 SH   OTR   0 0 165,340
MODEL N INC COM 607525102 9,831 624,174 SH   SOLE   624,174 0 0
MODEL N INC COM 607525102 4,058 257,665 SH   OTR   0 0 257,665
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 35,441 1,470,589 SH   SOLE   1,470,589 0 0
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 14,675 608,920 SH   OTR   0 0 608,920
PANHANDLE OIL AND GAS INC CL A 698477106 29,980 1,458,891 SH   SOLE   1,458,891 0 0
PANHANDLE OIL AND GAS INC CL A 698477106 12,415 604,139 SH   OTR   0 0 604,139
PURECYCLE CORP COM NEW 746228303 12,097 1,448,797 SH   SOLE   1,448,797 0 0
PURECYCLE CORP COM NEW 746228303 4,992 597,807 SH   OTR   0 0 597,807
QUANTENNA COMMUNICATIONS INC COM 74766D100 4,726 387,379 SH   SOLE   387,379 0 0
QUANTENNA COMMUNICATIONS INC COM 74766D100 1,944 159,325 SH   OTR   0 0 159,325
SILVER SPRING NETWORKS INC COM 82817Q103 16,615 1,023,072 SH   SOLE   1,023,072 0 0
SILVER SPRING NETWORKS INC COM 82817Q103 568 34,989 SH   OTR   0 0 34,989
SURMODICS INC COM 868873100 25,927 925,981 SH   SOLE   925,981 0 0
SURMODICS INC COM 868873100 10,722 382,939 SH   OTR   0 0 382,939
TECHTARGET INC COM 87874R100 23,351 1,677,480 SH   SOLE   1,677,480 0 0
TECHTARGET INC COM 87874R100 9,876 709,503 SH   OTR   0 0 709,503
XPERI CORP COM 98421B100 18,955 776,861 SH   SOLE   776,861 0 0
XPERI CORP COM 98421B100 7,886 323,186 SH   OTR   0 0 323,186
XPERI CORP CALL 98421B900 1,220 50,000 SH Call SOLE   50,000 0 0