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
A10 Networks Inc Com 002121101 2,470 250,520 SH   SOLE   250,520 0 0
ABM Industries Inc Com 000957100 3,135 82,853 SH   SOLE   80,213 0 2,640
AZZ Inc Com 002474104 5,285 111,410 SH   SOLE   111,410 0 0
Accuray Inc Com 004397105 4,374 1,048,970 SH   SOLE   1,048,970 0 0
Albany International Corp Com 012348108 2,871 39,100 SH   SOLE   39,100 0 0
Allied Motion Technologies Inc Com 019330109 5,821 113,907 SH   SOLE   113,907 0 0
Ameresco Inc Com 02361E108 4,116 78,790 SH   SOLE   78,790 0 0
Ampco Pittsburgh Corp Com 032037103 65 11,790 SH   SOLE   11,790 0 0
Andersons Inc Com 034164103 2,054 83,820 SH   SOLE   83,820 0 0
Arrow Financial Corp Com 042744102 1,606 53,678 SH   SOLE   53,678 0 0
Atlantic Power Corp. Com 04878Q863 3,388 1,613,310 SH   SOLE   1,613,310 0 0
Axcelis Technologies Inc Com 054540208 2,033 69,800 SH   SOLE   69,800 0 0
Axis Capital Holdings Limited Com G0692U109 2,613 51,849 SH   SOLE   51,849 0 0
Baycom Corp. Com 07272M107 1,711 112,800 SH   SOLE   112,800 0 0
Big Lots Inc Com 089302103 2,799 65,200 SH   SOLE   65,200 0 0
Bryn Mawr Bank Corp Com 117665109 4,033 131,804 SH   SOLE   131,804 0 0
CAI International Inc Com 12477X106 2,002 64,100 SH   SOLE   64,100 0 0
CNX Resources Corp Com 12653C108 2,201 203,760 SH   SOLE   203,760 0 0
COHU Inc Com 192576106 2,331 61,040 SH   SOLE   61,040 0 0
CVB Financial Corp Com 126600105 1,513 77,614 SH   SOLE   74,634 0 2,980
Cambridge Bancorp Com 132152109 1,777 25,470 SH   SOLE   25,470 0 0
Camden National Corp Com 133034108 5,212 145,671 SH   SOLE   145,671 0 0
Casey's General Store Inc Com 147528103 2,234 12,507 SH   SOLE   11,787 0 720
Catchmark Timber Trust Inc Com 14912Y202 1,445 154,380 SH   SOLE   154,380 0 0
Cavco Industries Inc Com 149568107 1,799 10,256 SH   SOLE   9,856 0 400
Central Valley Community Banco Com 155685100 1,870 125,616 SH   SOLE   125,616 0 0
Citi Trends Inc Com 17306X102 2,460 49,520 SH   SOLE   49,520 0 0
City Holding Company Com 177835105 4,119 59,227 SH   SOLE   59,227 0 0
Columbia Banking Systems Inc Com 197236102 2,814 78,392 SH   SOLE   76,502 0 1,890
Community Bank Systems Inc Com 203607106 3,864 62,018 SH   SOLE   62,018 0 0
DLH Holdings Corp Com 23335Q100 1,616 173,380 SH   SOLE   173,380 0 0
Darling Ingredients Inc Com 237266101 229 3,970 SH   SOLE   0 0 3,970
Deluxe Corp Com 248019101 4,040 138,350 SH   SOLE   135,360 0 2,990
EMCOR Group Inc Com 29084Q100 2,801 30,628 SH   SOLE   29,408 0 1,220
Encompass Health Corporation Com 29261A100 2,541 30,729 SH   SOLE   29,184 0 1,545
Essent Group Limited Com G3198U102 2,284 52,880 SH   SOLE   50,390 0 2,490
Farmers National Banc Corp Com 309627107 1,786 134,560 SH   SOLE   134,560 0 0
Federal Agricultural Mortgage Com 313148306 2,071 27,890 SH   SOLE   27,890 0 0
Financial Institutions Inc Com 317585404 1,762 78,300 SH   SOLE   78,300 0 0
First American Financial Corp Com 31847R102 1,831 35,467 SH   SOLE   35,467 0 0
First Bancorp N.C. Com 318910106 3,958 116,990 SH   SOLE   116,990 0 0
First Community Corp. Com 319835104 1,948 114,640 SH   SOLE   114,640 0 0
First Financial Corp Com 320218100 3,651 93,989 SH   SOLE   93,989 0 0
GATX Corp Com 361448103 889 10,690 SH   SOLE   9,520 0 1,170
Global Medical REIT Inc Com 37954A204 2,187 167,422 SH   SOLE   167,422 0 0
Goodrich Petroleum Corp Com 382410843 1,118 110,770 SH   SOLE   110,770 0 0
Great Lakes Dredge & Dock Corp Com 390607109 8,986 682,337 SH   SOLE   682,337 0 0
Great Southern Bancorp Com 390905107 6,095 124,634 SH   SOLE   124,634 0 0
HNI Corp Com 404251100 2,732 79,290 SH   SOLE   79,290 0 0
Hackett Group Inc Com 404609109 1,943 135,012 SH   SOLE   135,012 0 0
Hancock Whitney Corporation Com 410120109 2,414 70,970 SH   SOLE   70,970 0 0
Hanover Insurance Group Inc Com 410867105 1,913 16,360 SH   SOLE   16,360 0 0
Heartland Financial USA Inc Com 42234Q102 3,666 90,800 SH   SOLE   90,800 0 0
Heritage Crystal Clean Inc Com 42726M106 3,366 159,776 SH   SOLE   159,776 0 0
Hub Group Inc Com 443320106 2,424 42,530 SH   SOLE   40,820 0 1,710
IEC Electronics Corp Com 44949L105 2,671 197,120 SH   SOLE   197,120 0 0
ITT Corporation Com 45073V108 2,482 32,224 SH   SOLE   30,794 0 1,430
Ichor Holdings Com G4740B105 2,017 66,920 SH   SOLE   66,920 0 0
Independent Bank Corp Com 453836108 2,351 32,190 SH   SOLE   32,190 0 0
Industrial Logistics Propertie Com 456237106 2,396 102,863 SH   SOLE   99,563 0 3,300
Investors Title Company Com 461804106 1,714 11,202 SH   SOLE   11,202 0 0
Kelly Services Inc Com 488152208 3,625 176,220 SH   SOLE   176,220 0 0
Kimball Electronics Inc Com 49428J109 5,318 332,556 SH   SOLE   332,556 0 0
Knowles Corp Com 49926D109 3,570 193,730 SH   SOLE   193,730 0 0
Kulicke & Soffa Industries Inc Com 501242101 3,367 105,850 SH   SOLE   105,850 0 0
LCI Industries Com 50189K103 1,923 14,825 SH   SOLE   14,105 0 720
Lakeland Financial Corp Com 511656100 3,961 73,926 SH   SOLE   73,926 0 0
Landec Corporation Com 514766104 4,628 426,567 SH   SOLE   426,567 0 0
M/I Homes Inc Com 55305B101 3,806 85,924 SH   SOLE   85,924 0 0
MDC Holdings Inc Com 552676108 1,085 22,330 SH   SOLE   19,612 0 2,718
Mackinac Financial Corp. Com 554571109 1,741 136,410 SH   SOLE   136,410 0 0
Marinemax Inc Com 567908108 1,375 39,250 SH   SOLE   39,250 0 0
Mastercraft Boat Holdings Inc Com 57637H103 1,706 68,680 SH   SOLE   68,680 0 0
Materion Corp Com 576690101 1,755 27,548 SH   SOLE   27,548 0 0
Maximus Inc Com 577933104 1,981 27,061 SH   SOLE   27,061 0 0
McGrath Rentcorp Com 580589109 6,095 90,832 SH   SOLE   89,032 0 1,800
Mercer Int'l Inc Com 588056101 2,619 255,470 SH   SOLE   255,470 0 0
Merit Medical Systems Inc Com 589889104 1,984 35,747 SH   SOLE   35,747 0 0
Methode Electronics Inc Com 591520200 2,843 74,270 SH   SOLE   74,270 0 0
Miller Industries Inc Com 600551204 5,782 152,083 SH   SOLE   152,083 0 0
Mitek Systems Inc Com 606710200 2,225 125,157 SH   SOLE   125,157 0 0
Monro Muffler Brake Inc Com 610236101 5,497 103,130 SH   SOLE   103,130 0 0
Moog Inc Com 615394202 2,094 26,409 SH   SOLE   25,409 0 1,000
Mueller Industries Inc Com 624756102 2,265 64,512 SH   SOLE   62,262 0 2,250
NBT Bancorp Inc Com 628778102 3,573 111,320 SH   SOLE   111,320 0 0
NI Holdings Inc Com 65342T106 1,550 94,400 SH   SOLE   94,400 0 0
NMI Holdings Inc Com 629209305 2,446 107,975 SH   SOLE   107,975 0 0
Northwest Pipe Company Com 667746101 2,281 80,610 SH   SOLE   80,610 0 0
Northwestern Corp Com 668074305 2,290 39,279 SH   SOLE   39,279 0 0
Nuvasive Inc Com 670704105 2,120 37,630 SH   SOLE   37,630 0 0
OSI Systems Inc Com 671044105 1,820 19,520 SH   SOLE   19,520 0 0
Oceanfirst Financial Corp Com 675234108 3,310 177,693 SH   SOLE   177,693 0 0
Onto Innovation Inc Com 683344105 2,483 52,226 SH   SOLE   52,226 0 0
Orasure Technologies Inc Com 68554V108 290 27,380 SH   SOLE   27,380 0 0
Orion Group Holdings Inc Com 68628V308 4,745 956,660 SH   SOLE   956,660 0 0
Oshkosh Corporation Com 688239201 1,061 12,332 SH   SOLE   11,222 0 1,110
Pacwest Bancorp Com 695263103 2,566 101,008 SH   SOLE   101,008 0 0
Perdoceo Education Corp Com 71363P106 2,989 236,620 SH   SOLE   236,620 0 0
Photonics Inc Com 719405102 1,695 151,897 SH   SOLE   151,897 0 0
Pinnacle Financial Partners In Com 72346Q104 4,114 63,875 SH   SOLE   63,875 0 0
Plumas Bancorp Com 729273102 1,649 70,190 SH   SOLE   70,190 0 0
Preformed Line Products Co Com 740444104 955 13,960 SH   SOLE   13,960 0 0
Primerica Inc Com 74164M108 2,292 17,117 SH   SOLE   17,117 0 0
QCR Holdings Inc Com 74727A104 2,113 53,360 SH   SOLE   53,360 0 0
Radiant Logistics Inc Com 75025X100 1,818 313,440 SH   SOLE   313,440 0 0
Rogers Corp Com 775133101 3,721 23,960 SH   SOLE   23,960 0 0
Sanderson Farms Inc Com 800013104 2,287 17,303 SH   SOLE   16,503 0 800
Seacoast Bank Corp of Florida Com 811707801 3,114 105,750 SH   SOLE   105,750 0 0
Shoe Carnival Inc Com 824889109 1,690 43,140 SH   SOLE   43,140 0 0
Shyft Group Inc Com 825698103 3,794 133,680 SH   SOLE   133,680 0 0
Sierra Bancorp Com 82620P102 1,893 79,146 SH   SOLE   79,146 0 0
Silgan Holdings Inc Com 827048109 2,089 56,330 SH   SOLE   53,880 0 2,450
Smartfinancial Inc Com 83190L208 1,814 100,002 SH   SOLE   100,002 0 0
Southwestern Energy Company Com 845467109 2,866 961,800 SH   SOLE   961,800 0 0
Stepan Co Com 858586100 2,013 16,873 SH   SOLE   16,873 0 0
Sterling Bancorp Com 85917A100 2,950 164,081 SH   SOLE   164,081 0 0
Sterling Construction Company Com 859241101 2,880 154,740 SH   SOLE   154,740 0 0
Stewart Information Services C Com 860372101 3,078 63,640 SH   SOLE   63,640 0 0
Stock Yard Bancorp Inc Com 861025104 2,882 71,203 SH   SOLE   71,203 0 0
Systemax Inc Com 871851101 2,332 64,980 SH   SOLE   64,980 0 0
Tapestry Inc Com 876030107 2,483 79,875 SH   SOLE   79,875 0 0
Textainer Group Holdings Ltd Com G8766E109 4,441 231,538 SH   SOLE   231,538 0 0
Trico Bancshares Com 896095106 3,309 93,794 SH   SOLE   93,794 0 0
Triton International Ltd Com G9078F107 2,582 53,221 SH   SOLE   51,311 0 1,910
Triumph Bancorp Inc Com 89679E300 918 18,900 SH   SOLE   18,900 0 0
UMH Properties Inc Com 903002103 4,767 321,890 SH   SOLE   316,270 0 5,620
Universal Technical Institute Com 913915104 1,707 264,250 SH   SOLE   264,250 0 0
VSE Corp Com 918284100 2,042 53,050 SH   SOLE   53,050 0 0
Vectrus Inc Com 92242T101 1,738 34,950 SH   SOLE   34,950 0 0
Vishay Intertechnology Inc Com 928298108 3,188 153,948 SH   SOLE   148,918 0 5,030
Vista Outdoor Inc Com 928377100 805 33,893 SH   SOLE   33,893 0 0
WSFS Financial Corp Com 929328102 3,117 69,453 SH   SOLE   69,453 0 0
Washington Trust Bancorp Inc Com 940610108 2,668 59,550 SH   SOLE   59,550 0 0
Wesbanco Inc Com 950810101 2,348 78,380 SH   SOLE   78,380 0 0
Willdan Group Inc Com 96924N100 2,934 70,360 SH   SOLE   70,360 0 0
Williams Industrial Services G Com 96951A104 1,043 401,105 SH   SOLE   401,105 0 0
World Fuel Services Corp Com 981475106 1,758 56,408 SH   SOLE   56,408 0 0