Greenhaven Road Investment Management, L.P. Diversified Active

Name: Greenhaven Road Investment Management, L.P. Q1 2026 13F Filing | 13F Explorer
Creator: Greenhaven Road Investment Management, L.P.
Published: 2026-05-15

Location: Greenwich, CT

CIK: 0001741129 · Show all filings

Period: Q1 2026 (← Previous)

Filing Date: May 15, 2026

Total Value: $145M (100.0% shares, 0.0% debt)

Holdings (17)

New Positions (4)

ZM ZOOM COMMUNICATIONS INC 1.4%

Value $2.01M Shares 25,000 Est. Cost $88.07 Unrealized 0.0%

MRLN MERLIN INC 0.5%

Value $796K Shares 108,233 Est. Cost $7.35 Unrealized —

INFL LISTED FDS TR 0.4%

Value $529K Shares 16,024 Est. Cost $33.00 Unrealized —

PESI PERMA-FIX ENVIRONMENTAL SVCS 0.1%

Value $120K Shares 11,303 Est. Cost $14.49 Unrealized 0.0%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
ZM	ZOOM COMMUNICATIONS INC	25,000	$2.01M	1.4%	$88.07	0.0%	CL A	98980L101
MRLN	MERLIN INC	108,233	$796K	0.5%	$7.35	—	COM	590106100
INFL	LISTED FDS TR	16,024	$529K	0.4%	$33.00	—	HORIZON KINETICS	53656F623
PESI	PERMA-FIX ENVIRONMENTAL SVCS	11,303	$120K	0.1%	$14.49	0.0%	COM NEW	714157203

Increased Positions (3)

BUR BURFORD CAPITAL LIMITED 6.7%

Value $9.674M (-41.9%) Shares 2,140,312 (+14.7%) Est. Cost $9.79 Unrealized -3.3%

NN NEXTNAV INC 3.8%

Value $5.596M (+442.4%) Shares 349,333 (+463.4%) Est. Cost $14.96 Unrealized +4.1%

ALLT ALLOT LTD 5.8%

Value $8.438M (+0.2%) Shares 1,266,991 (+47.8%) Est. Cost $8.23 Unrealized +24.0%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
BUR	BURFORD CAPITAL LIMITED	2,140,312 (+14.7%)	$9.674M (-41.9%)	6.7%	$9.79	-3.3%	ORD SHS	G17977110
NN	NEXTNAV INC	349,333 (+463.4%)	$5.596M (+442.4%)	3.8%	$14.96	+4.1%	COMMON STOCK	65345N106
ALLT	ALLOT LTD	1,266,991 (+47.8%)	$8.438M (+0.2%)	5.8%	$8.23	+24.0%	SHS	M0854Q105

Exited Positions (3)

TLT ISHARES TR 249.8%

Value $363M Shares 4,166,500 Est. Cost — Unrealized —

LPX LOUISIANA PAC CORP 5.6%

Value $8.183M Shares 101,323 Est. Cost $85.08 Unrealized +4.7%

PINS PINTEREST INC 2.0%

Value $2.848M Shares 110,000 Est. Cost $28.79 Unrealized -22.8%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
TLT	ISHARES TR	4,166,500	$363M	249.8%	—	—	PUT	464287432
LPX	LOUISIANA PAC CORP	101,323	$8.183M	5.6%	$85.08	+4.7%	—	546347105
PINS	PINTEREST INC	110,000	$2.848M	2.0%	$28.79	-22.8%	—	72352L106

Decreased Positions (7)

PAR PAR TECHNOLOGY CORP 7.4%

Value $10.8M (-66.4%) Shares 810,444 (-8.6%) Est. Cost $42.35 Unrealized -33.2%

LFCR LIFECORE BIOMEDICAL INC 9.1%

Value $13.16M (-56.3%) Shares 3,537,573 (-3.9%) Est. Cost $6.34 Unrealized +23.1%

KKR KKR & CO INC 6.8%

Value $9.861M (-54.6%) Shares 106,600 (-43.9%) Est. Cost $30.22 Unrealized +279.7%

HGTY HAGERTY INC 17.2%

Value $24.96M (-29.0%) Shares 2,369,978 (-9.4%) Est. Cost $10.31 Unrealized +20.4%

CLBT CELLEBRITE DI LTD 14.6%

Value $21.16M (-26.7%) Shares 1,535,251 (-4.0%) Est. Cost $7.60 Unrealized +104.7%

KFS KINGSWAY FINL SVCS INC 13.3%

Value $19.31M (-23.8%) Shares 1,851,776 (-1.7%) Est. Cost $10.62 Unrealized +21.1%

ASTS AST SPACEMOBILE INC 12.8%

Value $18.66M (-6.6%) Shares 225,219 (-18.2%) Est. Cost $32.52 Unrealized +201.7%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
PAR	PAR TECHNOLOGY CORP	810,444 (-8.6%)	$10.8M (-66.4%)	7.4%	$42.35	-33.2%	COM	698884103
LFCR	LIFECORE BIOMEDICAL INC	3,537,573 (-3.9%)	$13.16M (-56.3%)	9.1%	$6.34	+23.1%	COM	514766104
KKR	KKR & CO INC	106,600 (-43.9%)	$9.861M (-54.6%)	6.8%	$30.22	+279.7%	COM	48251W104
HGTY	HAGERTY INC	2,369,978 (-9.4%)	$24.96M (-29.0%)	17.2%	$10.31	+20.4%	CL A COM	405166109
CLBT	CELLEBRITE DI LTD	1,535,251 (-4.0%)	$21.16M (-26.7%)	14.6%	$7.60	+104.7%	ORDINARY SHARES	M2197Q107
KFS	KINGSWAY FINL SVCS INC	1,851,776 (-1.7%)	$19.31M (-23.8%)	13.3%	$10.62	+21.1%	COM NEW	496904202
ASTS	AST SPACEMOBILE INC	225,219 (-18.2%)	$18.66M (-6.6%)	12.8%	$32.52	+201.7%	COM CL A	00217D100

Unchanged Positions (3)

RSSS RESEARCH SOLUTIONS INC 0.1%

Value $86,958 Shares 38,477 Est. Cost $2.51 Unrealized +7.7%

QRHC QUEST RESOURCE HLDG CORP 0.0%

Value $37,441 Shares 31,463 Est. Cost $3.84 Unrealized -47.8%

MTRX MATRIX SVC CO 0.1%

Value $160K Shares 13,969 Est. Cost $6.35 Unrealized +97.5%

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
RSSS	RESEARCH SOLUTIONS INC	38,477	$86,958	0.1%	$2.51	+7.7%	COM	761025105
QRHC	QUEST RESOURCE HLDG CORP	31,463	$37,441	0.0%	$3.84	-47.8%	COM NEW	74836W203
MTRX	MATRIX SVC CO	13,969	$160K	0.1%	$6.35	+97.5%	COM	576853105