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 3,724 163,977 SH   SOLE   163,977 0 0
ACXIOM CORP COM 005125109 1,546 68,078 SH   OTR   0 0 68,078
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,579 32,982 SH   SOLE   32,982 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 263 1,320 SH   OTR   0 0 1,320
BRIGHTCOVE INC COM 10921T101 1,462 210,343 SH   SOLE   210,343 0 0
BRIGHTCOVE INC COM 10921T101 546 78,502 SH   OTR   0 0 78,502
CECO ENVIRONMENTAL CORP COM 125141101 13,402 3,011,790 SH   SOLE   3,011,790 0 0
CECO ENVIRONMENTAL CORP COM 125141101 5,677 1,275,716 SH   OTR   0 0 1,275,716
DOLBY LABORATORIES INC COM 25659T107 8,140 128,074 SH   SOLE   128,074 0 0
DOLBY LABORATORIES INC COM 25659T107 3,423 53,847 SH   OTR   0 0 53,847
ELECTRONICS FOR IMAGING ING COM 286082102 4,079 149,235 SH   SOLE   149,235 0 0
ELECTRONICS FOR IMAGING ING COM 286082102 1,699 62,154 SH   OTR   0 0 62,154
FARMER BROS CO COM 307675108 25,110 831,456 SH   SOLE   831,456 0 0
FARMER BROS CO COM 307675108 10,518 348,292 SH   OTR   0 0 348,292
GENTHERM INC COM 37253A103 25,582 753,516 SH   SOLE   753,516 0 0
GENTHERM INC COM 37253A103 10,529 310,124 SH   OTR   0 0 310,124
HACKETT GROUP INC COM 404609109 16,434 1,023,296 SH   SOLE   1,023,296 0 0
HACKETT GROUP INC COM 404609109 6,811 424,096 SH   OTR   0 0 424,096
INTEGRATED DEVICE TECHNOLOGY COM 458118106 39,285 1,285,502 SH   SOLE   1,285,502 0 0
INTEGRATED DEVICE TECHNOLOGY COM 458118106 16,477 539,171 SH   OTR   0 0 539,171
KMG CHEMICALS INC COM 482564101 20,107 335,392 SH   SOLE   335,392 0 0
KMG CHEMICALS INC COM 482564101 8,531 142,384 SH   OTR   0 0 142,384
MODEL N INC COM 607525102 9,151 506,984 SH   SOLE   506,984 0 0
MODEL N INC COM 607525102 3,900 216,068 SH   OTR   0 0 216,068
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 33,540 1,493,993 SH   SOLE   1,493,993 0 0
MONOTYPE IMAGING HOLDINGS IN COM 61022P100 14,024 624,663 SH   OTR   0 0 624,663
PANHANDLE OIL AND GAS INC CL A 698477106 29,110 1,508,284 SH   SOLE   1,508,284 0 0
PANHANDLE OIL AND GAS INC CL A 698477106 12,176 630,862 SH   OTR   0 0 630,862
PURECYCLE CORP COM NEW 746228303 13,294 1,406,754 SH   SOLE   1,406,754 0 0
PURECYCLE CORP COM NEW 746228303 5,449 576,639 SH   OTR   0 0 576,639
QUANTENNA COMMUNICATIONS INC COM 74766D100 5,360 391,229 SH   SOLE   391,229 0 0
QUANTENNA COMMUNICATIONS INC COM 74766D100 2,232 162,925 SH   OTR   0 0 162,925
SIERRA WIRELESS INC COM 826516106 650 39,421 SH   SOLE   39,421 0 0
SIERRA WIRELESS INC COM 826516106 270 16,354 SH   OTR   0 0 16,354
SURMODICS INC COM 868873100 36,880 969,259 SH   SOLE   969,259 0 0
SURMODICS INC COM 868873100 15,360 403,686 SH   OTR   0 0 403,686
TPI COMPOSITES INC COM 87266J104 5,852 260,646 SH   SOLE   260,646 0 0
TPI COMPOSITES INC COM 87266J104 2,405 107,146 SH   OTR   0 0 107,146
TECHTARGET INC COM 87874R100 20,574 1,034,905 SH   SOLE   1,034,905 0 0
TECHTARGET INC COM 87874R100 8,699 437,551 SH   OTR   0 0 437,551
XPERI CORP COM 98421B100 17,197 813,109 SH   SOLE   813,109 0 0
XPERI CORP COM 98421B100 7,009 331,386 SH   OTR   0 0 331,386