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
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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
Agrofresh Solutions Warrants Exp 07/31/20 *W EXP 07/31/2020 00856G117 3 6,350 SH   OTR   6,350 0 0
Agrofresh Solutions Warrants Exp 07/31/20 COM 00856G117 37 66,995 SH   SOLE   62,645 0 4,350
Alibaba Group ADR SPONSORED ADR 01609W102 3,541 20,500 SH   SOLE   20,500 0 0
Alphabet Inc. Class A CAP STK CL A 02079K305 136 140 SH   OTR   140 0 0
Alphabet Inc. Class A CAP STK CL A 02079K305 2,744 2,818 SH   SOLE   2,613 0 205
Alphabet Inc. Class C CAP STK CL C 02079K107 134 140 SH   OTR   140 0 0
Alphabet Inc. Class C CAP STK CL C 02079K107 1,604 1,672 SH   SOLE   1,482 0 190
American Express Co. COM 025816109 265 2,925 SH   OTR   2,925 0 0
American Express Co. COM 025816109 3,151 34,835 SH   SOLE   32,710 0 2,125
Anheuser-Busch InBev ADR SPONSORED ADR 03524A108 391 3,275 SH   OTR   3,275 0 0
Anheuser-Busch InBev ADR SPONSORED ADR 03524A108 4,195 35,165 SH   SOLE   33,165 0 2,000
Apollo Global Management LP CL A SHS 037612306 256 8,500 SH   SOLE   8,500 0 0
Apple COM 037833100 551 3,577 SH   SOLE   3,577 0 0
Arch Cap Group LTD ORD G0450A105 394 4,000 SH   SOLE   2,800 0 1,200
AT&T COM 00206R102 568 14,508 SH   SOLE   7,906 0 6,602
Baidu Inc SPON ADR REP A 056752108 1,052 4,246 SH   SOLE   4,246 0 0
Baxter International COM 071813109 66 1,050 SH   OTR   1,050 0 0
Baxter International COM 071813109 1,310 20,825 SH   SOLE   20,325 0 500
Biogen Inc COM 09062X103 250 800 SH   SOLE   800 0 0
Blackstone Group LP COM UNIT LTD 09253U108 197 5,900 SH   OTR   5,900 0 0
Blackstone Group LP COM UNIT LTD 09253U108 3,802 113,923 SH   SOLE   109,298 0 4,625
BorgWarner Inc. COM 099724106 87 1,700 SH   OTR   1,700 0 0
BorgWarner Inc. COM 099724106 1,217 23,750 SH   SOLE   22,900 0 850
Boulevard Acquisition Corp II CL A 10157Q201 87 8,350 SH   OTR   8,350 0 0
Boulevard Acquisition Corp II CL A 10157Q201 1,065 102,325 SH   SOLE   95,080 0 7,245
Bristol-Myers Squibb COM 110122108 97 1,525 SH   OTR   1,525 0 0
Bristol-Myers Squibb COM 110122108 1,294 20,308 SH   SOLE   16,253 0 4,055
Brookfield Asset Management Class A CL A LTD VT SH 112585104 284 6,887 SH   OTR   6,887 0 0
Brookfield Asset Management Class A CL A LTD VT SH 112585104 3,968 96,079 SH   SOLE   88,884 0 7,195
Canadian National Railway Co. COM 136375102 83 1,000 SH   OTR   1,000 0 0
Canadian National Railway Co. COM 136375102 1,624 19,600 SH   SOLE   19,600 0 0
Chevron Corp. COM 166764100 388 3,306 SH   OTR   3,306 0 0
Chevron Corp. COM 166764100 2,252 19,163 SH   SOLE   17,097 0 2,066
Cisco Systems COM 17275R102 1,834 54,549 SH   SOLE   54,549 0 0
Colgate-Palmolive Co COM 194162103 631 8,660 SH   SOLE   1,160 0 7,500
Consolidated Edison COM 209115104 40 500 SH   OTR   500 0 0
Consolidated Edison COM 209115104 684 8,475 SH   SOLE   8,075 0 400
Controladora Vuela Cia De Avia SPON ADR RP 10 21240E105 620 52,210 SH   SOLE   52,210 0 0
Credit Acceptance Corp. COM 225310101 77 275 SH   OTR   275 0 0
Credit Acceptance Corp. COM 225310101 701 2,502 SH   SOLE   2,502 0 0
Devon Energy Corp COM 25179M103 134 3,650 SH   OTR   3,650 0 0
Devon Energy Corp COM 25179M103 1,211 32,980 SH   SOLE   30,545 0 2,435
Dover Corporation COM 260003108 82 900 SH   OTR   900 0 0
Dover Corporation COM 260003108 448 4,900 SH   SOLE   4,200 0 700
Enbridge Inc COM 29250N105 105 2,518 SH   OTR   2,518 0 0
Enbridge Inc COM 29250N105 1,415 33,827 SH   SOLE   30,977 0 2,850
Enstar Group LTD COM G3075P101 547 2,460 SH   SOLE   2,460 0 0
ExxonMobil Corp COM 30231G102 1,020 12,448 SH   SOLE   9,118 0 3,330
Foundation Medicine COM 350465100 347 8,625 SH   OTR   8,625 0 0
Foundation Medicine COM 350465100 4,886 121,545 SH   SOLE   114,105 0 7,440
Gilead Sciences Inc. COM 375558103 243 3,000 SH   SOLE   3,000 0 0
Granite REIT UNIT 99/99/9999 387437114 400 10,000 SH   SOLE   10,000 0 0
Grupo Aeroportuario Del Pacifi SPON ADR B 400506101 381 3,719 SH   SOLE   3,719 0 0
Home Depot COM 437076102 114 700 SH   OTR   700 0 0
Home Depot COM 437076102 4,878 29,825 SH   SOLE   26,425 0 3,400
Honeywell Intl Inc COM 438516106 458 3,228 SH   SOLE   3,228 0 0
Impinj Inc COM 453204109 122 2,925 SH   OTR   2,925 0 0
Impinj Inc COM 453204109 1,634 39,271 SH   SOLE   35,371 0 3,900
Johnson & Johnson COM 478160104 286 2,200 SH   OTR   2,200 0 0
Johnson & Johnson COM 478160104 1,764 13,569 SH   SOLE   13,119 0 450
JPMorgan Chase & Co COM 46625H100 153 1,600 SH   OTR   1,600 0 0
JPMorgan Chase & Co COM 46625H100 4,147 43,416 SH   SOLE   43,416 0 0
JPMorgan Chase & Co. Warrants Exp 10/28/18 *W EXP 10/28/2018 46634E114 54 1,000 SH   OTR   1,000 0 0
JPMorgan Chase & Co. Warrants Exp 10/28/18 *W EXP 10/28/2018 46634E114 230 4,250 SH   SOLE   4,250 0 0
KKR & Co LP COM UNITS 48248M102 751 36,934 SH   SOLE   36,934 0 0
Laboratory Corp Of America Holdings COM NEW 50540R409 484 3,205 SH   SOLE   3,205 0 0
Level 3 Communications COM NEW 52729N308 3 50 SH   OTR   50 0 0
Level 3 Communications COM NEW 52729N308 285 5,350 SH   SOLE   5,350 0 0
Markel Corp. COM 570535104 310 290 SH   OTR   290 0 0
Markel Corp. COM 570535104 3,425 3,207 SH   SOLE   2,892 0 315
Martin Marietta Matr COM 573284106 247 1,200 SH   SOLE   1,200 0 0
Matador Resources Co COM 576485205 92 3,400 SH   OTR   3,400 0 0
Matador Resources Co COM 576485205 1,985 73,100 SH   SOLE   71,400 0 1,700
Merck & Co. Inc. COM 58933Y105 406 6,290 SH   OTR   6,290 0 0
Merck & Co. Inc. COM 58933Y105 4,636 71,875 SH   SOLE   66,215 0 5,660
Microsoft Corp. COM 594918104 654 8,775 SH   OTR   8,775 0 0
Microsoft Corp. COM 594918104 5,661 75,992 SH   SOLE   69,957 0 6,035
Monsanto Co. COM 61166W101 429 3,582 SH   SOLE   3,582 0 0
Nextera Energy Inc COM 65339F101 82 560 SH   OTR   560 0 0
Nextera Energy Inc COM 65339F101 597 4,075 SH   SOLE   4,075 0 0
Oaktree Cap Group LLC UNIT CL A 674001201 286 6,075 SH   SOLE   5,750 0 325
Obsidian Energy Ltd. COM 674482104 675 643,000 SH   SOLE   643,000 0 0
Oneok Partners LP UNIT LTD PARTN 68268N103 306 5,516 SH   OTR   5,516 0 0
Oneok Partners LP UNIT LTD PARTN 68268N103 1,195 21,559 SH   SOLE   21,559 0 0
Philip Morris International, Inc. COM 718172109 196 1,750 SH   OTR   1,750 0 0
Philip Morris International, Inc. COM 718172109 1,783 15,909 SH   SOLE   14,779 0 1,130
Plug Power Inc COM NEW 72919P202 136 52,000 SH   SOLE   52,000 0 0
Procter & Gamble COM 742718109 45 495 SH   OTR   495 0 0
Procter & Gamble COM 742718109 335 3,680 SH   SOLE   3,680 0 0
Qualcomm Inc. COM 747525103 232 4,475 SH   OTR   4,475 0 0
Qualcomm Inc. COM 747525103 2,705 52,175 SH   SOLE   49,300 0 2,875
Schlumberger Ltd. COM 806857108 128 1,825 SH   OTR   1,825 0 0
Schlumberger Ltd. COM 806857108 3,670 52,222 SH   SOLE   51,647 0 575
STMicroelectronics N. V. NY REGISTRY 861012102 510 26,278 SH   SOLE   26,278 0 0
Total SA ADR SPONSORED ADR 89151E109 49 900 SH   OTR   900 0 0
Total SA ADR SPONSORED ADR 89151E109 203 3,750 SH   SOLE   3,650 0 1,100
U.S. Bancorp COM NEW 902973304 92 1,700 SH   OTR   1,700 0 0
U.S. Bancorp COM NEW 902973304 1,326 24,614 SH   SOLE   22,914 0 1,700
Union Pacific Corp. COM 907818108 446 3,850 SH   OTR   3,850 0 0
Union Pacific Corp. COM 907818108 3,320 28,625 SH   SOLE   28,625 0 0
USG Corp. COM NEW 903293405 2,908 89,060 SH   SOLE   86,735 0 2,325
USG Corp. COM NEW 903293405 122 3,725 SH   OTR   3,725 0 0
Verizon COM 92343V104 10 200 SH   OTR   200 0 0
Verizon COM 92343V104 563 11,371 SH   SOLE   9,171 0 2,200
Wayfair Inc- Class A CL A 94419L101 144 2,140 SH   OTR   2,140 0 0
Wayfair Inc- Class A CL A 94419L101 1,689 25,065 SH   SOLE   24,175 0 890
Wells Fargo & Co. COM 949746101 993 18,008 SH   SOLE   18,008 0 0
Weyerhaeuser Co REIT COM 962166104 309 9,075 SH   OTR   9,075 0 0
Weyerhaeuser Co REIT COM 962166104 4,859 142,775 SH   SOLE   135,600 0 7,175
Woodward, Inc. COM 980745103 473 6,100 SH   OTR   6,100 0 0
Woodward, Inc. COM 980745103 5,321 68,560 SH   SOLE   65,700 0 2,860
Yelp Inc CL A 985817105 4 100 SH   OTR   100 0 0
Yelp Inc CL A 985817105 672 15,520 SH   SOLE   15,120 0 400