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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
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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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ARC DOCUMENT SOLUTIONS INC COM 00191G103   3,223,000 1,100,000 SH   SOLE   1,100,000 0 0
ATN INTL INC COM 00215F107   3,624,800 80,000 SH   SOLE   80,000 0 0
BRIGHTCOVE INC COM 10921T101   1,741,590 333,000 SH   SOLE   333,000 0 0
CALAMP CORP COM 128126109   2,240,000 500,000 SH   SOLE   500,000 0 0
CONDUENT INC COM 206787103   4,050,000 1,000,000 SH   SOLE   1,000,000 0 0
CVD EQUIP CORP COM 126601103   3,718,583 674,879 SH   SOLE   674,879 0 0
DIGI INTL INC COM 253798102   2,741,250 75,000 SH   SOLE   75,000 0 0
EMCORE CORP COM NEW 290846203   577,500 600,000 SH   SOLE   600,000 0 0
FARO TECHNOLOGIES INC COM 311642102   2,352,800 80,000 SH   SOLE   80,000 0 0
HARVARD BIOSCIENCE INC COM 416906105   6,243,322 2,253,907 SH   SOLE   2,253,907 0 0
INTEVAC INC COM 461148108   1,617,500 250,000 SH   SOLE   250,000 0 0
LUNA INNOVATIONS INC COM 550351100   14,451,375 1,644,070 SH   SOLE   1,644,070 0 0
NEXTGEN HEALTHCARE INC COM 65343C102   2,857,001 152,130 SH   SOLE   152,130 0 0
RIBBON COMMUNICATIONS INC COM 762544104   4,531,242 1,624,101 SH   SOLE   1,624,101 0 0
TRAVELCENTERS OF AMERICA INC COM NEW 89421B109   4,478,000 100,000 SH   SOLE   100,000 0 0
TWIN DISC INC COM 901476101   6,955,788 715,616 SH   SOLE   715,616 0 0
WESTPORT FUEL SYSTEMS INC COM NEW 960908309   2,014,480 2,600,000 SH   SOLE   2,600,000 0 0