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 2,393 1,759,780 SH   SOLE   1,594,230 0 165,550
AXT Inc COM 00246W103 5,205 1,462,107 SH   SOLE   1,324,557 0 137,550
Acacia Research Corp COM 003881307 3,011 1,123,521 SH   SOLE   979,711 0 143,810
Actuant Corp Cls A COM 00508X203 758 34,570 SH   SOLE   24,040 0 10,530
American River Bankshares COM 029326105 4,515 334,173 SH   SOLE   302,813 0 31,360
Amtech Systems COM 032332504 4,067 767,424 SH   SOLE   695,224 0 72,200
Asure Software COM 04649U102 6,093 908,110 SH   SOLE   801,980 0 106,130
Atlantic Capital Bank COM 048269203 3,287 189,565 SH   SOLE   171,785 0 17,780
Axos Financial COM 05465C100 461 16,690 SH   SOLE   11,600 0 5,090
BG Staffing COM 05544A109 5,632 294,709 SH   SOLE   266,989 0 27,720
Banc of California Inc COM 05990K106 1,072 75,800 SH   SOLE   52,620 0 23,180
Bank of Commerce Hlds COM 06424J103 5,172 474,911 SH   SOLE   430,236 0 44,675
Barrett Business Services Inc COM 068463108 10,044 113,088 SH   SOLE   98,128 0 14,960
BayCom Corp COM 07272M107 2,370 104,341 SH   SOLE   88,595 0 15,746
Bed Bath and Beyond COM 075896100 553 51,930 SH   SOLE   36,090 0 15,840
Big 5 Sporting Goods Corp COM 08915P101 2,060 990,422 SH   SOLE   857,552 0 132,870
Blucora Inc COM 095229100 681 31,490 SH   SOLE   21,880 0 9,610
Bridgewater Bancshares COM 108621103 1,389 116,370 SH   SOLE   80,890 0 35,480
Build A Bear Workshop COM 120076104 2,679 850,419 SH   SOLE   733,989 0 116,430
CAI International Inc COM 12477X106 6,581 302,302 SH   SOLE   262,892 0 39,410
CRH Medical COM 12626F105 7,487 2,430,894 SH   SOLE   2,092,164 0 338,730
Caleres Inc COM 129500104 1,107 47,280 SH   SOLE   32,890 0 14,390
Capital Bancorp COM 139737100 3,930 288,580 SH   SOLE   261,430 0 27,150
Care Trust REIT Inc COM 14174T107 1,180 50,213 SH   SOLE   34,903 0 15,310
Citi Trends Inc COM 17306X102 933 51,010 SH   SOLE   35,470 0 15,540
Civista Bancshares COM 178867107 3,238 149,015 SH   SOLE   128,765 0 20,250
Cohu Inc COM 192576106 6,638 491,554 SH   SOLE   424,894 0 66,660
Columbus McKinnon Corp COM 199333105 4,493 123,321 SH   SOLE   104,391 0 18,930
Comfort Systems USA Inc COM 199908104 1,186 26,810 SH   SOLE   18,640 0 8,170
Comtech Telecom Corp COM 205826209 9,214 283,495 SH   SOLE   256,825 0 26,670
ConnectOne Bancorp COM 20786W107 1,467 66,080 SH   SOLE   45,950 0 20,130
Cra Intl Inc COM 12618T105 5,364 127,798 SH   SOLE   115,778 0 12,020
Customers Bancorp COM 23204G100 1,501 72,370 SH   SOLE   50,310 0 22,060
DMC Global Inc COM 23291C103 3,558 80,894 SH   SOLE   73,284 0 7,610
DXP Enterprises, Inc COM 233377407 899 25,900 SH   SOLE   17,970 0 7,930
Daktronics, Inc COM 234264109 761 103,070 SH   SOLE   71,670 0 31,400
EPlus Inc COM 294268107 457 6,010 SH   SOLE   4,180 0 1,830
Ennis Inc COM 293389102 1,333 65,950 SH   SOLE   45,860 0 20,090
Esquire Financial Hld COM 29667J101 6,668 268,853 SH   SOLE   243,563 0 25,290
FS Bancorp COM 30263Y104 5,422 103,267 SH   SOLE   93,557 0 9,710
Farmers National Banc Corp COM 309627107 4,362 301,248 SH   SOLE   272,908 0 28,340
First Bancshares Inc COM 318916103 3,745 115,944 SH   SOLE   105,034 0 10,910
First Business Financial Servi COM 319390100 4,468 185,547 SH   SOLE   168,087 0 17,460
First Choice Bancorp COM 31948P104 771 36,150 SH   SOLE   25,110 0 11,040
First Financial Corp COM 320218100 851 19,570 SH   SOLE   13,610 0 5,960
First Northwest COM 335834107 4,194 242,146 SH   SOLE   219,366 0 22,780
FormFactor COM 346375108 1,733 92,960 SH   SOLE   64,640 0 28,320
FreightCar America Inc COM 357023100 2,099 432,744 SH   SOLE   392,034 0 40,710
Global Medical REIT COM 37954A204 5,776 506,628 SH   SOLE   458,968 0 47,660
Great Ajax Corp COM 38983D300 5,583 360,201 SH   SOLE   307,931 0 52,270
Greenight Capital Cl A COM G4095J109 450 42,900 SH   SOLE   29,830 0 13,070
Hallmark Financial Services In COM 40624Q203 1,889 98,740 SH   SOLE   68,620 0 30,120
Hanger Inc COM 41043F208 1,053 51,650 SH   SOLE   35,850 0 15,800
Heritage Insurance Hlds Inc COM 42727J102 6,532 436,940 SH   SOLE   375,420 0 61,520
Hibbett Sports Inc COM 428567101 938 40,980 SH   SOLE   28,480 0 12,500
Horizon Bancorp COM 440407104 4,838 278,713 SH   SOLE   252,493 0 26,220
Houston Wire & Cable Co COM 44244K109 885 187,410 SH   SOLE   130,370 0 57,040
Hurco Companies Inc COM 447324104 4,271 132,771 SH   SOLE   120,281 0 12,490
Ichor Holdings COM G4740B105 1,060 43,840 SH   SOLE   30,430 0 13,410
InTest Corp COM 461147100 1,636 351,837 SH   SOLE   318,737 0 33,100
InnerWorkings COM 45773Y105 4,025 908,642 SH   SOLE   793,682 0 114,960
Insight Enterprises Inc COM 45765U103 1,982 35,590 SH   SOLE   24,750 0 10,840
Intevac Inc COM 461148108 966 184,350 SH   SOLE   127,930 0 56,420
LCI Industries COM 50189K103 1,202 13,090 SH   SOLE   9,100 0 3,990
LCNB Corp COM 50181P100 4,134 233,023 SH   SOLE   211,103 0 21,920
Landec Corp COM 514766104 4,700 432,386 SH   SOLE   376,506 0 55,880
Lifetime Brands Inc COM 53222Q103 4,727 534,105 SH   SOLE   463,875 0 70,230
MTS Systems Corp COM 553777103 609 11,030 SH   SOLE   7,670 0 3,360
Manitex International Inc COM 563420108 5,670 852,607 SH   SOLE   772,397 0 80,210
Matrix Service Co COM 576853105 1,057 61,640 SH   SOLE   42,850 0 18,790
Meta Financial Group COM 59100U108 1,666 51,100 SH   SOLE   35,510 0 15,590
Metropolitan Bank Hld COM 591774104 5,765 146,570 SH   SOLE   126,110 0 20,460
Michaels Companies COM 59408Q106 585 59,790 SH   SOLE   41,550 0 18,240
MidWestOne Financial Group COM 598511103 1,199 39,290 SH   SOLE   27,310 0 11,980
Midland States COM 597742105 5,394 207,052 SH   SOLE   178,422 0 28,630
Mistras Group Inc COM 60649T107 3,020 184,159 SH   SOLE   159,049 0 25,110
NN Inc COM 629337106 3,207 449,734 SH   SOLE   392,984 0 56,750
NV5 Global Inc COM 62945V109 941 13,790 SH   SOLE   9,590 0 4,200
Natural Gas Services Group Inc COM 63886Q109 5,319 415,221 SH   SOLE   376,161 0 39,060
Navigant Consulting COM 63935N107 813 29,090 SH   SOLE   20,230 0 8,860
Netgear Inc COM 64111Q104 773 23,990 SH   SOLE   16,680 0 7,310
Newpark Resources Inc COM 651718504 856 112,370 SH   SOLE   78,140 0 34,230
Northeast Bancorp COM 66405S100 6,914 311,865 SH   SOLE   282,525 0 29,340
Northwest Pipe COM 667746101 7,212 256,189 SH   SOLE   232,189 0 24,000
OP Bancorp COM 67109R109 2,964 303,097 SH   SOLE   274,587 0 28,510
One Stop Systems COM 68247W109 1,814 616,006 SH   SOLE   558,246 0 57,760
Orrstown Financial Services COM 687380105 2,539 115,946 SH   SOLE   105,036 0 10,910
PAM Transportation Services, I COM 693149106 5,437 91,982 SH   SOLE   83,392 0 8,590
PC Connection COM 69318J100 4,855 124,803 SH   SOLE   106,303 0 18,500
PCB Bancorp COM 69320M109 2,901 176,328 SH   SOLE   159,738 0 16,590
PRA Group COM 69354N106 967 28,630 SH   SOLE   19,910 0 8,720
Pacific Premier Bancorp Inc COM 69478X105 800 25,650 SH   SOLE   17,840 0 7,810
Parke Bancorp COM 700885106 5,031 226,423 SH   SOLE   205,123 0 21,300
Patrick Industries COM 703343103 1,138 26,550 SH   SOLE   18,460 0 8,090
Pennantpark Floating Rate Capi COM 70806A106 4,632 399,318 SH   SOLE   337,348 0 61,970
Photronics Inc COM 719405102 1,678 154,260 SH   SOLE   107,260 0 47,000
Plantronics COM 727493108 1,296 34,730 SH   SOLE   24,150 0 10,580
Premier Financial Bancorp COM 74050M105 4,754 276,872 SH   SOLE   251,100 0 25,772
ProFire Energy COM 74316X101 2,576 1,363,029 SH   SOLE   1,234,608 0 128,421
Resources Connection COM 76122Q105 1,018 59,900 SH   SOLE   41,570 0 18,330
Ribbon Communications Inc COM 762544104 1,244 212,980 SH   SOLE   148,110 0 64,870
Riverview Bancorp COM 769397100 4,627 626,917 SH   SOLE   567,937 0 58,980
Rudolph Technologies Inc COM 781270103 1,015 38,520 SH   SOLE   26,740 0 11,780
SP Plus Corp COM 78469C103 1,281 34,610 SH   SOLE   24,070 0 10,540
Shoe Carnival Inc COM 824889109 2,432 75,029 SH   SOLE   64,499 0 10,530
Silvercrest Asset Mgmnt Grp Cl COM 828359109 3,981 323,621 SH   SOLE   293,181 0 30,440
Spartan Motors Inc COM 846819100 7,287 531,111 SH   SOLE   460,561 0 70,550
Standard Motor COM 853666105 1,220 25,130 SH   SOLE   17,440 0 7,690
Sterling Bancorp COM 85917W102 915 93,792 SH   SOLE   65,232 0 28,560
Sterling Construction Co Inc COM 859241101 4,344 330,310 SH   SOLE   281,640 0 48,670
Sykes Enterprises COM 871237103 1,215 39,640 SH   SOLE   27,510 0 12,130
Textainer Group Holdings COM G8766E109 1,354 136,590 SH   SOLE   94,950 0 41,640
Third Point Reinsurrance Ltd COM G8827U100 880 88,100 SH   SOLE   61,140 0 26,960
Tristate Capital Hlds COM 89678F100 469 22,300 SH   SOLE   15,500 0 6,800
Triumph Bancorp COM 89679E300 1,130 35,430 SH   SOLE   24,630 0 10,800
TrueBlue Inc COM 89785X101 817 38,740 SH   SOLE   26,940 0 11,800
Twin Disc Inc COM 901476101 6,531 616,756 SH   SOLE   546,636 0 70,120
Ultra Clean Holdings COM 90385V107 10,745 734,175 SH   SOLE   637,605 0 96,570
Unique Fabricating COM 90915J103 1,896 655,971 SH   SOLE   594,261 0 61,710
Universal Electronics Inc COM 913483103 5,952 116,933 SH   SOLE   100,483 0 16,450
Univeste Financial Corp COM 915271100 856 33,570 SH   SOLE   23,290 0 10,280
Veritex Holdings COM 923451108 830 34,204 SH   SOLE   23,729 0 10,475
Wabash National Corp COM 929566107 1,148 79,120 SH   SOLE   55,020 0 24,100
West Bancorporation COM 95123P106 5,243 241,180 SH   SOLE   208,820 0 32,360
ZAGG Inc COM 98884U108 7,522 1,199,621 SH   SOLE   1,051,091 0 148,530
Zovio COM 98979V102 1,578 800,979 SH   SOLE   690,219 0 110,760