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
ARC Document Solutions COM 00191G103 2,418 1,084,452 SH   SOLE   981,302 0 103,150
ASV Holdings LLC COM 00215L104 1,590 578,128 SH   SOLE   522,842 0 55,286
AXT Inc COM 00246W103 5,630 1,265,074 SH   SOLE   1,144,774 0 120,300
Acacia Research Corp COM 003881307 3,486 1,069,386 SH   SOLE   930,346 0 139,040
Actuant Corp Cls A COM 00508X203 904 37,090 SH   SOLE   26,560 0 10,530
Alcentra Capital Corp COM 01374T102 3,345 445,952 SH   SOLE   395,412 0 50,540
American River Bankshares COM 029326105 4,163 320,222 SH   SOLE   289,202 0 31,020
Amtech Systems COM 032332504 3,812 715,148 SH   SOLE   646,838 0 68,310
Asure Software COM 04649U102 4,866 796,356 SH   SOLE   704,196 0 92,160
Atlantic Capital Bank COM 048269203 3,315 185,915 SH   SOLE   168,395 0 17,520
BG Staffing COM 05544A109 6,068 277,823 SH   SOLE   251,523 0 26,300
Banc of California Inc COM 05990K106 1,130 81,660 SH   SOLE   58,480 0 23,180
Bank of Commerce Hlds COM 06424J103 4,703 445,746 SH   SOLE   403,331 0 42,415
Barrett Business Services Inc COM 068463108 9,832 127,142 SH   SOLE   110,152 0 16,990
BayCom Corp COM 07272M107 2,286 100,967 SH   SOLE   85,621 0 15,346
Big 5 Sporting Goods Corp COM 08915P101 1,854 582,946 SH   SOLE   499,296 0 83,650
Blucora Inc COM 095229100 606 18,150 SH   SOLE   13,000 0 5,150
Bridgepoint Education Inc COM 10807M105 4,181 684,354 SH   SOLE   585,654 0 98,700
Bridgewater Bancshares COM 108621103 1,294 125,530 SH   SOLE   89,900 0 35,630
Build A Bear Workshop COM 120076104 3,831 627,953 SH   SOLE   552,103 0 75,850
CAI International Inc COM 12477X106 6,729 290,038 SH   SOLE   251,698 0 38,340
CRH Medical COM 12626F105 5,524 2,076,648 SH   SOLE   1,790,148 0 286,500
Caleres Inc COM 129500104 1,253 50,750 SH   SOLE   36,360 0 14,390
Capital Bancorp COM 139737100 2,203 189,552 SH   SOLE   171,272 0 18,280
Care Trust REIT Inc COM 14174T107 1,271 54,173 SH   SOLE   38,793 0 15,380
Citi Trends Inc COM 17306X102 1,057 54,720 SH   SOLE   39,180 0 15,540
Civista Bancshares COM 178867107 3,114 142,640 SH   SOLE   123,000 0 19,640
Cohu Inc COM 192576106 6,397 433,715 SH   SOLE   373,825 0 59,890
Columbus McKinnon Corp COM 199333105 4,160 121,113 SH   SOLE   102,593 0 18,520
Comfort Systems USA Inc COM 199908104 1,517 28,950 SH   SOLE   20,730 0 8,220
Comtech Telecommunications Cor COM 205826209 6,143 264,546 SH   SOLE   239,146 0 25,400
ConnectOne Bancorp COM 20786W107 1,405 71,310 SH   SOLE   51,090 0 20,220
Cra Intl Inc COM 12618T105 3,004 59,444 SH   SOLE   53,844 0 5,600
Customers Bancorp COM 23204G100 1,430 78,110 SH   SOLE   55,940 0 22,170
DMC Global Inc COM 23291C103 9,591 193,214 SH   SOLE   174,884 0 18,330
DXP Enterprises, Inc COM 233377407 1,087 27,930 SH   SOLE   20,000 0 7,930
Daktronics, Inc COM 234264109 824 110,590 SH   SOLE   79,190 0 31,400
EPlus Inc COM 294268107 570 6,440 SH   SOLE   4,610 0 1,830
Ennis Inc COM 293389102 1,478 71,190 SH   SOLE   51,000 0 20,190
Esquire Financial Hld COM 29667J101 5,693 250,114 SH   SOLE   226,034 0 24,080
FS Bancorp COM 30263Y104 4,872 96,517 SH   SOLE   87,267 0 9,250
Farmers National Banc Corp COM 309627107 3,859 279,809 SH   SOLE   252,989 0 26,820
Federal Signal Corp COM 313855108 1,597 61,430 SH   SOLE   44,010 0 17,420
First Bancshares Inc COM 318916103 2,983 96,536 SH   SOLE   87,426 0 9,110
First Business Financial Servi COM 319390100 3,125 156,076 SH   SOLE   141,366 0 14,710
First Choice Bancorp COM 31948P104 677 31,500 SH   SOLE   22,560 0 8,940
First Financial Corp COM 320218100 882 21,000 SH   SOLE   15,040 0 5,960
First Northwest COM 335834107 2,948 189,362 SH   SOLE   171,212 0 18,150
FormFactor COM 346375108 1,614 100,300 SH   SOLE   71,860 0 28,440
FreightCar America Inc COM 357023100 1,301 211,215 SH   SOLE   191,275 0 19,940
Global Medical REIT COM 37954A204 4,730 481,644 SH   SOLE   436,264 0 45,380
Great Ajax Corp COM 38983D300 4,835 351,918 SH   SOLE   300,918 0 51,000
Greenight Capital Cl A COM G4095J109 500 46,030 SH   SOLE   32,960 0 13,070
Hallmark Financial Services In COM 40624Q203 1,316 126,570 SH   SOLE   90,630 0 35,940
Hanger Inc COM 41043F208 1,060 55,640 SH   SOLE   39,840 0 15,800
Heritage Insurance Hlds Inc COM 42727J102 6,247 427,846 SH   SOLE   367,716 0 60,130
Hibbett Sports Inc COM 428567101 658 28,850 SH   SOLE   20,660 0 8,190
Horizon Bancorp COM 440407104 4,259 264,715 SH   SOLE   239,875 0 24,840
Houston Wire & Cable Co COM 44244K109 1,274 201,190 SH   SOLE   144,150 0 57,040
Hurco Companies Inc COM 447324104 5,091 126,244 SH   SOLE   114,344 0 11,900
Ichor Holdings COM G4740B105 1,067 47,240 SH   SOLE   33,830 0 13,410
InnerWorkings COM 45773Y105 2,400 662,879 SH   SOLE   579,379 0 83,500
Insight Enterprises Inc COM 45765U103 2,116 38,430 SH   SOLE   27,530 0 10,900
Intevac Inc COM 461148108 1,218 198,710 SH   SOLE   142,290 0 56,420
LCI Industries COM 50189K103 1,085 14,120 SH   SOLE   10,110 0 4,010
LCNB Corp COM 50181P100 3,615 210,800 SH   SOLE   190,550 0 20,250
Landec Corp COM 514766104 3,781 307,931 SH   SOLE   266,661 0 41,270
Lifetime Brands Inc COM 53222Q103 4,411 466,758 SH   SOLE   404,998 0 61,760
MDC Partners Inc COM 552697104 594 264,080 SH   SOLE   189,100 0 74,980
MTS Systems Corp COM 553777103 645 11,840 SH   SOLE   8,480 0 3,360
Manitex International Inc COM 563420108 5,558 726,532 SH   SOLE   657,372 0 69,160
Matrix Service Co COM 576853105 1,302 66,500 SH   SOLE   47,620 0 18,880
Meta Financial Group COM 59100U108 1,317 66,920 SH   SOLE   47,930 0 18,990
Metropolitan Bank Hld COM 591774104 4,946 142,168 SH   SOLE   122,188 0 19,980
MidWestOne Financial Group COM 598511103 1,155 42,400 SH   SOLE   30,360 0 12,040
Midland States COM 597742105 4,878 202,762 SH   SOLE   174,752 0 28,010
Multi-Color Corp COM 625383104 613 12,290 SH   SOLE   8,800 0 3,490
NN Inc COM 629337106 3,236 432,015 SH   SOLE   377,195 0 54,820
NV5 Global Inc COM 62945V109 879 14,800 SH   SOLE   10,600 0 4,200
Natural Gas Services Group Inc COM 63886Q109 3,934 227,241 SH   SOLE   205,731 0 21,510
Navigant Consulting COM 63935N107 608 31,210 SH   SOLE   22,350 0 8,860
Netgear Inc COM 64111Q104 853 25,740 SH   SOLE   18,430 0 7,310
Newpark Resources Inc COM 651718504 1,104 120,570 SH   SOLE   86,340 0 34,230
Northeast Bancorp COM 663904209 6,130 296,444 SH   SOLE   268,514 0 27,930
Northrim BanCorp Inc COM 666762109 3,107 90,271 SH   SOLE   81,761 0 8,510
Northwest Pipe COM 667746101 6,064 252,684 SH   SOLE   228,874 0 23,810
OP Bancorp COM 67109R109 2,462 281,414 SH   SOLE   254,434 0 26,980
Old Line Bancshares, Inc COM 67984M100 1,076 43,150 SH   SOLE   30,900 0 12,250
One Stop Systems COM 68247W109 1,217 596,591 SH   SOLE   539,311 0 57,280
Orrstown Financial Services COM 687380105 2,051 110,345 SH   SOLE   99,925 0 10,420
PAM Transportation Services, I COM 693149106 6,454 131,867 SH   SOLE   119,027 0 12,840
PC Connection COM 69318J100 4,569 124,610 SH   SOLE   106,120 0 18,490
PCM Inc COM 69323K100 9,028 246,452 SH   SOLE   222,912 0 23,540
PRA Group COM 69354N106 823 30,710 SH   SOLE   21,990 0 8,720
Pacific City Financial COM 69406T408 2,905 166,463 SH   SOLE   150,773 0 15,690
Pacific Premier Bancorp Inc COM 69478X105 730 27,530 SH   SOLE   19,720 0 7,810
Parke Bancorp COM 700885106 3,380 161,823 SH   SOLE   146,293 0 15,530
Patrick Industries COM 703343103 1,291 28,490 SH   SOLE   20,400 0 8,090
Pennantpark Floating Rate Capi COM 70806A106 4,888 381,576 SH   SOLE   321,296 0 60,280
Photronics Inc COM 719405102 1,573 166,430 SH   SOLE   119,190 0 47,240
Plantronics COM 727493108 1,727 37,460 SH   SOLE   26,830 0 10,630
Premier Financial Bancorp COM 74050M105 4,717 300,272 SH   SOLE   271,490 0 28,782
ProFire Energy COM 74316X101 1,424 795,647 SH   SOLE   719,366 0 76,281
Resources Connection COM 76122Q105 1,068 64,560 SH   SOLE   46,230 0 18,330
Ribbon Communications Inc COM 762544104 1,177 228,540 SH   SOLE   163,670 0 64,870
Riverview Bancorp COM 769397100 3,123 427,244 SH   SOLE   386,984 0 40,260
Rudolph Technologies Inc COM 781270103 946 41,500 SH   SOLE   29,720 0 11,780
SP Plus Corp COM 78469C103 1,274 37,350 SH   SOLE   26,760 0 10,590
Silvercrest Asset Mgmnt Grp Cl COM 828359109 4,305 302,098 SH   SOLE   273,198 0 28,900
Spartan Motors Inc COM 846819100 4,536 513,707 SH   SOLE   445,367 0 68,340
Standard Motor COM 853666105 1,329 27,070 SH   SOLE   19,380 0 7,690
Sterling Bancorp COM 85917W102 1,020 100,632 SH   SOLE   72,072 0 28,560
Sterling Construction Co Inc COM 859241101 4,045 323,098 SH   SOLE   275,678 0 47,420
Summit Financial Grp COM 86606G101 4,688 176,853 SH   SOLE   159,903 0 16,950
Sykes Enterprises COM 871237103 1,208 42,720 SH   SOLE   30,590 0 12,130
Textainer Group Holdings COM G8766E109 1,160 120,160 SH   SOLE   86,090 0 34,070
Third Point Reinsurrance Ltd COM G8827U100 986 94,960 SH   SOLE   68,000 0 26,960
Triumph Bancorp COM 89679E300 1,124 38,240 SH   SOLE   27,380 0 10,860
TrueBlue Inc COM 89785X101 983 41,570 SH   SOLE   29,770 0 11,800
Twin Disc Inc COM 901476101 6,120 367,584 SH   SOLE   321,214 0 46,370
Ultra Clean Holdings COM 90385V107 7,517 726,288 SH   SOLE   629,988 0 96,300
Unique Fabricating COM 90915J103 2,757 614,054 SH   SOLE   555,674 0 58,380
Universal Electronics Inc COM 913483103 4,175 112,382 SH   SOLE   96,392 0 15,990
Univeste Financial Corp COM 915271100 885 36,200 SH   SOLE   25,920 0 10,280
Veritex Holdings COM 923451108 893 36,879 SH   SOLE   26,404 0 10,475
Wabash National Corp COM 929566107 1,150 84,900 SH   SOLE   60,800 0 24,100
West Bancorporation COM 95123P106 4,796 231,938 SH   SOLE   200,458 0 31,480
ZAGG Inc COM 98884U108 7,123 785,320 SH   SOLE   687,780 0 97,540