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 2,625 1,286,829 SH   SOLE   1,165,859 0 120,970
ASV Holdings LLC COM 00215L104 4,048 590,897 SH   SOLE   535,611 0 55,286
AXT Inc COM 00246W103 5,456 1,377,826 SH   SOLE   1,247,656 0 130,170
Acacia Research Corp COM 003881307 3,182 1,075,002 SH   SOLE   935,962 0 139,040
Actuant Corp Cls A COM 00508X203 860 34,650 SH   SOLE   24,120 0 10,530
Alcentra Capital Corp COM 01374T102 3,829 456,870 SH   SOLE   406,330 0 50,540
American River Bankshares COM 029326105 4,051 330,423 SH   SOLE   299,403 0 31,020
Amtech Systems COM 032332504 4,012 729,514 SH   SOLE   661,204 0 68,310
Asure Software COM 04649U102 7,164 870,454 SH   SOLE   767,874 0 102,580
Atlantic Capital Bank COM 048269203 3,195 186,645 SH   SOLE   169,125 0 17,520
BG Staffing COM 05544A109 5,298 280,607 SH   SOLE   254,307 0 26,300
Banc of California Inc COM 05990K106 1,061 75,970 SH   SOLE   52,790 0 23,180
Bank of Commerce Hlds COM 06424J103 4,835 452,270 SH   SOLE   409,855 0 42,415
Barrett Business Services Inc COM 068463108 10,523 127,400 SH   SOLE   110,440 0 16,960
BayCom Corp COM 07272M107 2,199 100,419 SH   SOLE   85,073 0 15,346
Big 5 Sporting Goods Corp COM 08915P101 1,436 736,664 SH   SOLE   637,694 0 98,970
Blucora Inc COM 095229100 515 16,950 SH   SOLE   11,800 0 5,150
Bridgewater Bancshares COM 108621103 1,346 116,600 SH   SOLE   81,120 0 35,480
Build A Bear Workshop COM 120076104 3,489 624,212 SH   SOLE   548,362 0 75,850
CAI International Inc COM 12477X106 7,219 290,860 SH   SOLE   252,580 0 38,280
CRH Medical COM 12626F105 6,397 2,111,335 SH   SOLE   1,822,085 0 289,250
Caleres Inc COM 129500104 944 47,390 SH   SOLE   33,000 0 14,390
Capital Bancorp COM 139737100 2,772 225,329 SH   SOLE   204,009 0 21,320
Care Trust REIT Inc COM 14174T107 1,196 50,313 SH   SOLE   35,003 0 15,310
Citi Trends Inc COM 17306X102 747 51,120 SH   SOLE   35,580 0 15,540
Civista Bancshares COM 178867107 3,203 142,673 SH   SOLE   123,033 0 19,640
Cohu Inc COM 192576106 7,302 473,207 SH   SOLE   408,277 0 64,930
Columbus McKinnon Corp COM 199333105 4,984 118,755 SH   SOLE   100,285 0 18,470
Comfort Systems USA Inc COM 199908104 1,370 26,860 SH   SOLE   18,690 0 8,170
Comtech Telecom Corp COM 205826209 7,591 270,050 SH   SOLE   244,650 0 25,400
ConnectOne Bancorp COM 20786W107 1,500 66,210 SH   SOLE   46,080 0 20,130
Cra Intl Inc COM 12618T105 3,759 98,067 SH   SOLE   88,777 0 9,290
Customers Bancorp COM 23204G100 1,523 72,520 SH   SOLE   50,460 0 22,060
DMC Global Inc COM 23291C103 4,911 77,523 SH   SOLE   70,263 0 7,260
DXP Enterprises, Inc COM 233377407 989 26,090 SH   SOLE   18,160 0 7,930
Daktronics, Inc COM 234264109 637 103,310 SH   SOLE   71,910 0 31,400
EPlus Inc COM 294268107 415 6,020 SH   SOLE   4,190 0 1,830
Ennis Inc COM 293389102 1,356 66,080 SH   SOLE   45,990 0 20,090
Esquire Financial Hld COM 29667J101 6,450 256,465 SH   SOLE   232,385 0 24,080
FS Bancorp COM 30263Y104 5,110 98,512 SH   SOLE   89,262 0 9,250
Farmers National Banc Corp COM 309627107 4,237 285,684 SH   SOLE   258,864 0 26,820
Federal Signal Corp COM 313855108 1,526 57,030 SH   SOLE   39,690 0 17,340
First Bancshares Inc COM 318916103 3,334 109,901 SH   SOLE   99,491 0 10,410
First Business Financial Servi COM 319390100 4,133 175,863 SH   SOLE   159,343 0 16,520
First Choice Bancorp COM 31948P104 824 36,220 SH   SOLE   25,180 0 11,040
First Financial Corp COM 320218100 788 19,620 SH   SOLE   13,660 0 5,960
First Northwest COM 335834107 3,143 193,436 SH   SOLE   175,286 0 18,150
FormFactor COM 346375108 1,460 93,150 SH   SOLE   64,830 0 28,320
FreightCar America Inc COM 357023100 1,537 261,914 SH   SOLE   236,984 0 24,930
Global Medical REIT COM 37954A204 5,075 483,337 SH   SOLE   437,957 0 45,380
Great Ajax Corp COM 38983D300 4,847 346,235 SH   SOLE   295,345 0 50,890
Greenight Capital Cl A COM G4095J109 365 43,000 SH   SOLE   29,930 0 13,070
Hallmark Financial Services In COM 40624Q203 1,673 117,570 SH   SOLE   81,790 0 35,780
Hanger Inc COM 41043F208 991 51,760 SH   SOLE   35,960 0 15,800
Heritage Insurance Hlds Inc COM 42727J102 6,496 421,543 SH   SOLE   361,543 0 60,000
Hibbett Sports Inc COM 428567101 490 26,950 SH   SOLE   18,760 0 8,190
Horizon Bancorp COM 440407104 4,341 265,639 SH   SOLE   240,799 0 24,840
Houston Wire & Cable Co COM 44244K109 984 187,880 SH   SOLE   130,840 0 57,040
Hurco Companies Inc COM 447324104 4,506 126,704 SH   SOLE   114,804 0 11,900
Ichor Holdings COM G4740B105 1,039 43,940 SH   SOLE   30,530 0 13,410
InnerWorkings COM 45773Y105 3,339 874,158 SH   SOLE   762,568 0 111,590
Insight Enterprises Inc COM 45765U103 2,075 35,660 SH   SOLE   24,820 0 10,840
Intevac Inc COM 461148108 894 184,780 SH   SOLE   128,360 0 56,420
LCI Industries COM 50189K103 1,180 13,110 SH   SOLE   9,120 0 3,990
LCNB Corp COM 50181P100 4,196 220,841 SH   SOLE   200,101 0 20,740
Landec Corp COM 514766104 3,901 416,292 SH   SOLE   361,972 0 54,320
Lifetime Brands Inc COM 53222Q103 4,862 513,951 SH   SOLE   445,651 0 68,300
MDC Partners Inc COM 552697104 622 246,700 SH   SOLE   171,720 0 74,980
MTS Systems Corp COM 553777103 647 11,060 SH   SOLE   7,700 0 3,360
Manitex International Inc COM 563420108 4,858 795,091 SH   SOLE   720,061 0 75,030
Matrix Service Co COM 576853105 1,251 61,760 SH   SOLE   42,970 0 18,790
Meta Financial Group COM 59100U108 1,742 62,120 SH   SOLE   43,230 0 18,890
Metropolitan Bank Hld COM 591774104 6,222 141,398 SH   SOLE   121,458 0 19,940
MidWestOne Financial Group COM 598511103 1,101 39,370 SH   SOLE   27,390 0 11,980
Midland States COM 597742105 5,341 199,904 SH   SOLE   171,964 0 27,940
Mistras Group Inc COM 60649T107 902 62,800 SH   SOLE   53,500 0 9,300
Multi-Color Corp COM 625383104 574 11,480 SH   SOLE   7,990 0 3,490
NN Inc COM 629337106 4,198 430,080 SH   SOLE   375,260 0 54,820
NV5 Global Inc COM 62945V109 1,125 13,820 SH   SOLE   9,620 0 4,200
Natural Gas Services Group Inc COM 63886Q109 4,957 300,425 SH   SOLE   272,025 0 28,400
Navigant Consulting COM 63935N107 676 29,160 SH   SOLE   20,300 0 8,860
Netgear Inc COM 64111Q104 608 24,040 SH   SOLE   16,730 0 7,310
Newpark Resources Inc COM 651718504 836 112,630 SH   SOLE   78,400 0 34,230
Northeast Bancorp COM 66405S100 8,203 297,413 SH   SOLE   269,483 0 27,930
Northrim BanCorp Inc COM 666762109 3,231 90,613 SH   SOLE   82,103 0 8,510
Northwest Pipe COM 667746101 6,537 253,582 SH   SOLE   229,772 0 23,810
OP Bancorp COM 67109R109 3,115 287,330 SH   SOLE   260,350 0 26,980
Old Line Bancshares, Inc COM 67984M100 1,067 40,110 SH   SOLE   27,860 0 12,250
One Stop Systems COM 68247W109 1,041 608,614 SH   SOLE   551,334 0 57,280
Orrstown Financial Services COM 687380105 2,435 110,713 SH   SOLE   100,293 0 10,420
PAM Transportation Services, I COM 693149106 5,654 91,195 SH   SOLE   82,655 0 8,540
PC Connection COM 69318J100 4,337 123,993 SH   SOLE   105,553 0 18,440
PCB Bancorp COM 69320M109 2,848 167,119 SH   SOLE   151,429 0 15,690
PCM Inc COM 69323K100 8,743 249,519 SH   SOLE   225,979 0 23,540
PRA Group COM 69354N106 807 28,690 SH   SOLE   19,970 0 8,720
Pacific Premier Bancorp Inc COM 69478X105 794 25,710 SH   SOLE   17,900 0 7,810
Parke Bancorp COM 700885106 5,172 215,950 SH   SOLE   195,630 0 20,320
Patrick Industries COM 703343103 1,309 26,610 SH   SOLE   18,520 0 8,090
Pennantpark Floating Rate Capi COM 70806A106 4,410 381,500 SH   SOLE   321,350 0 60,150
Photronics Inc COM 719405102 1,267 154,570 SH   SOLE   107,570 0 47,000
Plantronics COM 727493108 1,289 34,800 SH   SOLE   24,220 0 10,580
Premier Financial Bancorp COM 74050M105 4,598 306,526 SH   SOLE   277,744 0 28,782
ProFire Energy COM 74316X101 1,609 1,065,771 SH   SOLE   965,470 0 100,301
Resources Connection COM 76122Q105 961 60,030 SH   SOLE   41,700 0 18,330
Ribbon Communications Inc COM 762544104 1,044 213,430 SH   SOLE   148,560 0 64,870
Riverview Bancorp COM 769397100 4,435 519,311 SH   SOLE   470,481 0 48,830
Rudolph Technologies Inc COM 781270103 1,071 38,760 SH   SOLE   26,980 0 11,780
SP Plus Corp COM 78469C103 1,107 34,680 SH   SOLE   24,140 0 10,540
Silvercrest Asset Mgmnt Grp Cl COM 828359109 4,327 308,400 SH   SOLE   279,500 0 28,900
Spartan Motors Inc COM 846819100 5,571 508,293 SH   SOLE   439,953 0 68,340
Standard Motor COM 853666105 1,142 25,180 SH   SOLE   17,490 0 7,690
Sterling Bancorp COM 85917W102 937 93,992 SH   SOLE   65,432 0 28,560
Sterling Construction Co Inc COM 859241101 4,264 317,714 SH   SOLE   270,294 0 47,420
Summit Financial Grp COM 86606G101 4,197 156,322 SH   SOLE   141,572 0 14,750
Sykes Enterprises COM 871237103 1,091 39,730 SH   SOLE   27,600 0 12,130
Textainer Group Holdings COM G8766E109 1,125 111,580 SH   SOLE   77,660 0 33,920
Third Point Reinsurrance Ltd COM G8827U100 911 88,300 SH   SOLE   61,340 0 26,960
Tristate Capital Hlds COM 89678F100 260 12,200 SH   SOLE   8,490 0 3,710
Triumph Bancorp COM 89679E300 1,031 35,500 SH   SOLE   24,700 0 10,800
TrueBlue Inc COM 89785X101 857 38,830 SH   SOLE   27,030 0 11,800
Twin Disc Inc COM 901476101 6,231 412,629 SH   SOLE   361,659 0 50,970
Ultra Clean Holdings COM 90385V107 10,138 728,328 SH   SOLE   632,208 0 96,120
Unique Fabricating COM 90915J103 1,685 621,849 SH   SOLE   563,469 0 58,380
Universal Electronics Inc COM 913483103 4,608 112,342 SH   SOLE   96,352 0 15,990
Univeste Financial Corp COM 915271100 884 33,650 SH   SOLE   23,370 0 10,280
Veritex Holdings COM 923451108 890 34,284 SH   SOLE   23,809 0 10,475
Wabash National Corp COM 929566107 1,290 79,290 SH   SOLE   55,190 0 24,100
West Bancorporation COM 95123P106 4,930 232,306 SH   SOLE   200,826 0 31,480
ZAGG Inc COM 98884U108 6,894 990,493 SH   SOLE   867,903 0 122,590
Zovio COM 98979V102 2,450 684,420 SH   SOLE   584,710 0 99,710