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

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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
ADTRAN INC COM 00738A106 7,804 423,000 SH   SOLE   378,698 0 44,302
ANALOG DEVICES INC COM 032654105 12,471 75,500 SH   SOLE   67,577 0 7,923
ARK ETF TR INNOVATION ETF 00214Q104 1,989 30,000 SH Call SOLE   30,000 0 0
ARRAY TECHNOLOGIES INC COM SHS 04271T100 7,258 644,000 SH   SOLE   576,705 0 67,295
ASPEN AEROGELS INC COM 04523Y105 2,758 80,000 SH   SOLE   57,043 0 22,957
AZZ INC COM 002474104 5,355 111,000 SH   SOLE   99,427 0 11,573
BABCOCK & WILCOX ENTERPRISES COM 05614L209 5,671 695,000 SH   SOLE   622,188 0 72,812
BLUE APRON HLDGS INC CL A NEW 09523Q200 810 200,000 SH   SOLE   146,371 0 53,629
BWX TECHNOLOGIES INC COM 05605H100 11,014 204,500 SH   SOLE   183,709 0 20,791
CABOT CORP COM 127055101 16,247 237,500 SH   SOLE   212,632 0 24,868
COMPASS MINERALS INTL INC COM 20451N101 11,428 182,000 SH   SOLE   162,947 0 19,053
CROWN HLDGS INC COM 228368106 17,262 138,000 SH   SOLE   123,605 0 14,395
CTS CORP COM 126501105 10,514 297,500 SH   SOLE   266,526 0 30,974
DOLE PLC ORD SHS G27907107 7,725 623,000 SH   SOLE   557,714 0 65,286
ENPRO INDS INC COM 29355X107 15,783 161,500 SH   SOLE   144,610 0 16,890
EVERBRIDGE INC COM 29978A104 8,379 192,000 SH   SOLE   171,915 0 20,085
FORD MTR CO DEL COM 345370860 14,999 887,000 SH   SOLE   794,638 0 92,362
GREAT LAKES DREDGE & DOCK CO COM 390607109 15,994 1,140,000 SH   SOLE   1,023,617 0 116,383
HARVARD BIOSCIENCE INC COM 416906105 13,823 2,226,000 SH   SOLE   1,992,698 0 233,302
MANCHESTER UTD PLC NEW ORD CL A G5784H106 7,235 500,000 SH   SOLE   447,670 0 52,330
MATRIX SVC CO COM 576853105 8,820 1,073,000 SH   SOLE   961,970 0 111,030
MRC GLOBAL INC COM 55345K103 14,751 1,238,500 SH   SOLE   1,109,383 0 129,117
NEENAH INC COM 640079109 8,983 226,500 SH   SOLE   204,136 0 22,364
ORION ENGINEERED CARBONS S A COM L72967109 15,387 963,500 SH   SOLE   863,866 0 99,634
SEALED AIR CORP NEW COM 81211K100 11,584 173,000 SH   SOLE   154,904 0 18,096
SONOS INC COM 83570H108 8,805 312,000 SH   SOLE   279,462 0 32,538
SPDR S&P 500 ETF TR TR UNIT 78462F103 2,258 5,000 SH Call SOLE   5,000 0 0
SUMMIT MATLS INC CL A 86614U100 15,328 493,500 SH   SOLE   442,758 0 50,742
THERMON GROUP HLDGS INC COM 88362T103 14,685 906,500 SH   SOLE   811,555 0 94,945
TILE SHOP HLDGS INC COM 88677Q109 8,057 1,230,000 SH   SOLE   1,100,924 0 129,076
TUFIN SOFTWARE TECHNOLOGIE SHS M8893U102 18,789 2,104,000 SH   SOLE   1,883,816 0 220,184
UNISYS CORP COM NEW 909214306 25,889 1,198,000 SH   SOLE   1,073,485 0 124,515
VALMONT INDS INC COM 920253101 21,235 89,000 SH   SOLE   80,008 0 8,992
VISHAY PRECISION GROUP INC COM 92835K103 18,647 580,000 SH   SOLE   519,324 0 60,676
XPERI HOLDING CORP COM 98390M103 17,892 1,033,000 SH   SOLE   925,037 0 107,963