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 1,661 2,050,388 SH   SOLE   1,871,718 0 178,670
AXT Inc COM 00246W103 6,085 1,895,587 SH   SOLE   1,730,607 0 164,980
Acacia Research Corp COM 003881307 2,804 1,263,045 SH   SOLE   1,105,765 0 157,280
Alpine Income Property Trust COM 02083X103 3,713 301,651 SH   SOLE   275,433 0 26,218
American River Bankshares COM 029326105 3,485 404,258 SH   SOLE   369,058 0 35,200
Amtech Systems COM 032332504 3,869 889,506 SH   SOLE   811,596 0 77,910
Asure Software COM 04649U102 6,164 1,034,242 SH   SOLE   918,442 0 115,800
Atlantic Capital Bank COM 048269203 2,515 211,914 SH   SOLE   193,504 0 18,410
Axos Financial COM 05465C100 405 22,320 SH   SOLE   13,880 0 8,440
BG Staffing COM 05544A109 2,571 343,772 SH   SOLE   313,852 0 29,920
Banc of California Inc COM 05990K106 628 78,480 SH   SOLE   48,820 0 29,660
Bank of Commerce Hlds COM 06424J103 4,359 553,907 SH   SOLE   505,692 0 48,215
Barrett Business Services Inc COM 068463108 5,008 126,325 SH   SOLE   109,905 0 16,420
BayCom Corp COM 07272M107 1,323 109,799 SH   SOLE   93,233 0 16,566
Bed Bath and Beyond COM 075896100 331 78,630 SH   SOLE   48,930 0 29,700
Big 5 Sporting Goods Corp COM 08915P101 466 435,262 SH   SOLE   379,912 0 55,350
Blucora Inc COM 095229100 345 28,590 SH   SOLE   17,790 0 10,800
Bridgewater Bancshares COM 108621103 1,029 105,500 SH   SOLE   65,640 0 39,860
Build A Bear Workshop COM 120076104 1,121 783,719 SH   SOLE   714,899 0 68,820
CAI International Inc COM 12477X106 4,933 348,887 SH   SOLE   301,967 0 46,920
CRH Medical COM 12626F105 3,641 2,717,522 SH   SOLE   2,340,679 0 376,843
Caleres Inc COM 129500104 221 42,530 SH   SOLE   26,460 0 16,070
Capital Bancorp COM 139737100 4,100 327,474 SH   SOLE   298,974 0 28,500
Citi Trends Inc COM 17306X102 208 23,330 SH   SOLE   14,510 0 8,820
Civista Bancshares COM 178867107 2,485 166,089 SH   SOLE   143,849 0 22,240
Cohu Inc COM 192576106 6,322 510,686 SH   SOLE   445,076 0 65,610
Columbus McKinnon Corp COM 199333105 3,370 134,788 SH   SOLE   113,908 0 20,880
Comfort Systems USA Inc COM 199908104 887 24,270 SH   SOLE   15,100 0 9,170
Comtech Telecom Corp COM 205826209 3,928 295,562 SH   SOLE   269,892 0 25,670
ConnectOne Bancorp COM 20786W107 805 59,870 SH   SOLE   37,250 0 22,620
Cra Intl Inc COM 12618T105 4,954 148,293 SH   SOLE   135,323 0 12,970
Customers Bancorp COM 23204G100 807 73,840 SH   SOLE   45,930 0 27,910
DMC Global Inc COM 23291C103 2,172 94,387 SH   SOLE   86,177 0 8,210
DXP Enterprises, Inc COM 233377407 287 23,440 SH   SOLE   14,580 0 8,860
Daktronics, Inc COM 234264109 458 92,930 SH   SOLE   57,820 0 35,110
EPlus Inc COM 294268107 474 7,570 SH   SOLE   4,710 0 2,860
Eagle Bancorp Montana COM 26942G100 1,832 113,007 SH   SOLE   103,127 0 9,880
Enerpac Tool Group COM 292765104 516 31,180 SH   SOLE   19,400 0 11,780
Ennis Inc COM 293389102 1,120 59,650 SH   SOLE   37,110 0 22,540
Esquire Financial Hld COM 29667J101 5,079 337,448 SH   SOLE   307,848 0 29,600
FS Bancorp COM 30263Y104 4,335 120,430 SH   SOLE   109,950 0 10,480
Farmers National Banc Corp COM 309627107 4,088 351,526 SH   SOLE   320,946 0 30,580
First Bancshares Inc COM 318916103 2,580 135,271 SH   SOLE   123,501 0 11,770
First Business Financial Servi COM 319390100 3,341 215,561 SH   SOLE   196,721 0 18,840
First Financial Corp COM 320218100 595 17,650 SH   SOLE   10,980 0 6,670
First Northwest COM 335834107 3,072 282,622 SH   SOLE   258,032 0 24,590
FormFactor COM 346375108 814 40,530 SH   SOLE   25,230 0 15,300
FreightCar America Inc COM 357023100 451 485,101 SH   SOLE   442,981 0 42,120
Global Medical REIT COM 37954A204 4,925 486,689 SH   SOLE   444,349 0 42,340
Great Ajax Corp COM 38983D300 3,160 496,865 SH   SOLE   424,658 0 72,207
Hallmark Financial Services In COM 40624Q203 403 99,760 SH   SOLE   62,060 0 37,700
Hanger Inc COM 41043F208 729 46,770 SH   SOLE   29,100 0 17,670
Healthcare Services Group Inc COM 421906108 972 40,640 SH   SOLE   25,290 0 15,350
Heritage Insurance Hlds Inc COM 42727J102 5,411 505,211 SH   SOLE   429,751 0 75,460
Hibbett Sports Inc COM 428567101 142 12,990 SH   SOLE   8,080 0 4,910
Horizon Bancorp COM 440407104 3,208 325,355 SH   SOLE   297,055 0 28,300
Houston Wire & Cable Co COM 44244K109 370 168,840 SH   SOLE   105,050 0 63,790
Hurco Companies Inc COM 447324104 4,509 154,950 SH   SOLE   141,470 0 13,480
Ichor Holdings COM G4740B105 760 39,650 SH   SOLE   24,670 0 14,980
InTest Corp COM 461147100 1,093 410,788 SH   SOLE   375,058 0 35,730
InnerWorkings COM 45773Y105 1,197 1,023,042 SH   SOLE   897,082 0 125,960
Insight Enterprises Inc COM 45765U103 1,223 29,020 SH   SOLE   18,060 0 10,960
Intevac Inc COM 461148108 683 167,010 SH   SOLE   103,910 0 63,100
LCNB Corp COM 50181P100 3,409 270,586 SH   SOLE   246,936 0 23,650
Landec Corp COM 514766104 4,689 539,563 SH   SOLE   470,933 0 68,630
Lifetime Brands Inc COM 53222Q103 3,356 594,057 SH   SOLE   517,047 0 77,010
MTS Systems Corp COM 553777103 224 9,950 SH   SOLE   6,190 0 3,760
Manitex International Inc COM 563420108 4,099 992,389 SH   SOLE   905,829 0 86,560
Matrix Service Co COM 576853105 529 55,810 SH   SOLE   34,720 0 21,090
Medifast Inc COM 58470H101 249 3,980 SH   SOLE   2,480 0 1,500
Meta Financial Group COM 59100U108 1,006 46,310 SH   SOLE   28,810 0 17,500
Metropolitan Bank Hld COM 591774104 4,558 169,259 SH   SOLE   144,299 0 24,960
MidWestOne Financial Group COM 598511103 745 35,570 SH   SOLE   22,130 0 13,440
Midland States COM 597742105 3,919 224,043 SH   SOLE   193,343 0 30,700
Mistras Group Inc COM 60649T107 875 205,358 SH   SOLE   177,758 0 27,600
NN Inc COM 629337106 877 506,677 SH   SOLE   444,647 0 62,030
NV5 Global Inc COM 62945V109 796 19,280 SH   SOLE   12,000 0 7,280
Natural Gas Services Group Inc COM 63886Q109 2,161 484,490 SH   SOLE   442,340 0 42,150
Netgear Inc COM 64111Q104 495 21,680 SH   SOLE   13,490 0 8,190
Newpark Resources Inc COM 651718504 91 101,320 SH   SOLE   63,040 0 38,280
Northeast Bank COM 66405S100 4,245 364,025 SH   SOLE   332,365 0 31,660
Northwest Pipe COM 667746101 6,363 285,992 SH   SOLE   261,152 0 24,840
One Stop Systems COM 68247W109 1,032 716,642 SH   SOLE   654,282 0 62,360
Onto Innovation Inc COM 683344105 935 31,521 SH   SOLE   19,612 0 11,909
Orrstown Financial Services COM 687380105 1,864 135,337 SH   SOLE   123,567 0 11,770
PAM Transportation Services, I COM 693149106 3,010 97,881 SH   SOLE   89,181 0 8,700
PC Connection COM 69318J100 977 23,710 SH   SOLE   14,750 0 8,960
PRA Group COM 69354N106 788 28,440 SH   SOLE   17,690 0 10,750
Pacific Premier Bancorp Inc COM 69478X105 435 23,110 SH   SOLE   14,380 0 8,730
Parke Bancorp COM 700885106 3,902 289,240 SH   SOLE   263,951 0 25,289
Patrick Industries COM 703343103 674 23,940 SH   SOLE   14,890 0 9,050
Pennantpark Floating Rate Capi COM 70806A106 2,003 412,200 SH   SOLE   344,070 0 68,130
Photronics Inc COM 719405102 1,129 110,050 SH   SOLE   68,470 0 41,580
Premier Financial Bancorp COM 74050M105 4,335 349,626 SH   SOLE   319,164 0 30,462
ProFire Energy COM 74316X101 1,255 1,593,563 SH   SOLE   1,454,922 0 138,641
Quantum Corp COM 747906501 929 314,904 SH   SOLE   287,184 0 27,720
Resources Connection COM 76122Q105 596 54,290 SH   SOLE   33,780 0 20,510
Ribbon Communications Inc COM 762544104 558 184,280 SH   SOLE   115,020 0 69,260
Riverview Bancorp COM 769397100 3,665 731,529 SH   SOLE   667,879 0 63,650
SMTC COM 832682207 117 50,000 SH   SOLE   45,380 0 4,620
SP Plus Corp COM 78469C103 650 31,340 SH   SOLE   19,500 0 11,840
Shoe Carnival Inc COM 824889109 1,998 96,220 SH   SOLE   82,660 0 13,560
Silvercrest Asset Mgmnt Grp Cl COM 828359109 3,840 405,968 SH   SOLE   370,418 0 35,550
Spartan Motors Inc COM 846819100 7,359 570,045 SH   SOLE   496,115 0 73,930
Standard Motor COM 853666105 944 22,710 SH   SOLE   14,130 0 8,580
Sterling Bancorp COM 85917W102 68 15,903 SH   SOLE   9,893 0 6,010
Sterling Construction Co Inc COM 859241101 3,457 363,890 SH   SOLE   310,370 0 53,520
Super Micro Computer, Inc COM 86800U104 576 27,090 SH   SOLE   16,850 0 10,240
Sykes Enterprises COM 871237103 634 23,360 SH   SOLE   14,540 0 8,820
Textainer Group Holdings COM G8766E109 1,018 123,830 SH   SOLE   77,040 0 46,790
Tristate Capital Hlds COM 89678F100 284 29,410 SH   SOLE   18,290 0 11,120
Triumph Bancorp COM 89679E300 437 16,800 SH   SOLE   10,450 0 6,350
TrueBlue Inc COM 89785X101 508 39,820 SH   SOLE   24,770 0 15,050
Twin Disc Inc COM 901476101 4,890 700,567 SH   SOLE   624,147 0 76,420
Ultra Clean Holdings COM 90385V107 6,469 468,789 SH   SOLE   409,749 0 59,040
Unique Fabricating COM 90915J103 1,776 759,030 SH   SOLE   692,430 0 66,600
Universal Electronics Inc COM 913483103 4,971 129,555 SH   SOLE   111,515 0 18,040
Univeste Financial Corp COM 915271100 496 30,390 SH   SOLE   18,910 0 11,480
Veritex Holdings COM 923451108 433 30,985 SH   SOLE   19,280 0 11,705
Wabash National Corp COM 929566107 668 92,490 SH   SOLE   57,560 0 34,930
West Bancorporation COM 95123P106 4,390 268,487 SH   SOLE   233,207 0 35,280
ZAGG Inc COM 98884U108 4,218 1,356,271 SH   SOLE   1,193,611 0 162,660
Zovio COM 98979V102 1,456 882,503 SH   SOLE   763,733 0 118,770