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Greenhaven Road Investment Management, L.P.

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13F filer, CIK 1741129, GREENWICH, CT

Greenhaven Road Investment Management, L.P. reported $154,030,266 across 17 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-14. Its ten largest share positions make up 91.65% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001420506-26-001699

Period
2026-06-30
Reported value
$154M
Holdings
17
Top 10 weight
91.65%
New
4
Sold out
4

Largest buys vs the previous quarter

SecurityShares changeApprox. value
ANABnew+171,059$11.5M
CODInew+657,596$7.01M
BURadded+902,635$3.7M
APPnew+4,810$2.48M
NNadded+90,130$1.61M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
ASTSreduced-117,925-$10.5M
ALLTexited-1,266,991-$8.44M
HGTYreduced-504,548-$6.01M
CLBTreduced-275,212-$4.02M
LFCRreduced-346,804-$1.82M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001420506-26-001699, largest first. % of portfolio is the value over $154,030,266, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
HGTYHAGERTY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,508,448 shares; 2024Q4: 1,236,170 shares; 2025Q1: 1,360,506 shares; 2025Q2: 1,811,539 shares; 2025Q3: 2,664,784 shares; 2025Q4: 2,616,654 shares; 2026Q1: 2,369,978 shares; 2026Q2: 1,865,430 shares 1,865,430$22.2M14.44%-504,548Timeline
CLBTCELLEBRITE DI LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 2,086,411 shares; 2024Q4: 1,975,541 shares; 2025Q1: 1,572,093 shares; 2025Q2: 1,518,047 shares; 2025Q3: 1,653,047 shares; 2025Q4: 1,599,937 shares; 2026Q1: 1,535,251 shares; 2026Q2: 1,260,039 shares 1,260,039$18.4M11.94%-275,212Timeline
KWYKINGSWAY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 509,291 shares; 2024Q4: 511,060 shares; 2025Q1: 755,645 shares; 2025Q2: 1,310,536 shares; 2025Q3: 1,310,536 shares; 2025Q4: 1,884,529 shares; 2026Q1: 1,851,776 shares; 2026Q2: 1,696,149 shares 1,696,149$17.7M11.47%-155,627Timeline
LFCRLIFECORE BIOMEDICAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 2,228,784 shares; 2024Q4: 3,616,146 shares; 2025Q1: 3,616,146 shares; 2025Q2: 3,694,832 shares; 2025Q3: 3,694,832 shares; 2025Q4: 3,682,573 shares; 2026Q1: 3,537,573 shares; 2026Q2: 3,190,769 shares 3,190,769$16.8M10.88%-346,804Timeline
PARPAR TECHNOLOGY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,200,374 shares; 2024Q4: 878,258 shares; 2025Q1: 1,007,289 shares; 2025Q2: 995,014 shares; 2025Q3: 973,198 shares; 2025Q4: 886,883 shares; 2026Q1: 810,444 shares; 2026Q2: 817,888 shares 817,888$14.2M9.25%+7,444Timeline
BURBURFORD CAPITAL LIMITEDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,622,622 shares; 2024Q4: 1,607,622 shares; 2025Q1: 1,607,622 shares; 2025Q2: 1,625,330 shares; 2025Q3: 1,602,812 shares; 2025Q4: 1,865,312 shares; 2026Q1: 2,140,312 shares; 2026Q2: 3,042,947 shares 3,042,947$12.5M8.1%+902,635Timeline
ANABANAPTYSBIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 171,059 shares 171,059$11.5M7.5%newTimeline
KKRKKR & CO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 278,700 shares; 2024Q4: 266,700 shares; 2025Q1: 244,700 shares; 2025Q2: 234,700 shares; 2025Q3: 219,700 shares; 2025Q4: 190,100 shares; 2026Q1: 106,600 shares; 2026Q2: 114,051 shares 114,051$10.5M6.8%+7,451Timeline
ASTSAST SPACEMOBILE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 268,000 shares; 2025Q3: 329,111 shares; 2025Q4: 275,219 shares; 2026Q1: 225,219 shares; 2026Q2: 107,294 shares 107,294$9.53M6.19%-117,925Timeline
NNNEXTNAV INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 60,000 shares; 2025Q2: 60,000 shares; 2025Q3: 60,000 shares; 2025Q4: 62,000 shares; 2026Q1: 349,333 shares; 2026Q2: 439,463 shares 439,463$7.84M5.09%+90,130Timeline
CODICOMPASS DIVERSIFIEDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 657,596 shares 657,596$7.01M4.55%newTimeline
ZMZOOM COMMUNICATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 25,000 shares; 2026Q2: 33,141 shares 33,141$2.86M1.86%+8,141Timeline
APPAPPLOVIN CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 4,810 shares 4,810$2.48M1.61%newTimeline
PDEXPRO-DEX INC COLOQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 3,585 shares 3,585$210K0.14%newTimeline
MTRXMATRIX SVC COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 15,685 shares; 2024Q4: 13,931 shares; 2025Q1: 13,969 shares; 2025Q2: 13,969 shares; 2025Q3: 13,969 shares; 2025Q4: 13,969 shares; 2026Q1: 13,969 shares; 2026Q2: 12,947 shares 12,947$177K0.12%-1,022Timeline
RSSSRESEARCH SOLUTIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 36,326 shares; 2024Q4: 40,251 shares; 2025Q1: 37,743 shares; 2025Q2: 38,477 shares; 2025Q3: 38,477 shares; 2025Q4: 38,477 shares; 2026Q1: 38,477 shares; 2026Q2: 38,477 shares 38,477$89.3K0.06%0Timeline
QRHCQUEST RESOURCE HLDG CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 11,054 shares; 2025Q1: 11,482 shares; 2025Q2: 12,976 shares; 2025Q3: 30,777 shares; 2025Q4: 31,463 shares; 2026Q1: 31,463 shares; 2026Q2: 31,463 shares 31,463$39.6K0.03%0Timeline

Sold out in Q2 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
ALLTALLOT LTD1,266,991$8.44Mshares
MRLNMERLIN INC108,233$796Kshares
INFLLISTED FDS TR16,024$529Kshares
PESIPERMA-FIX ENVIRONMENTAL SVCS11,303$120Kshares

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001420506-26-001699 base2026-08-14acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0001420506-26-001699 Quarter ended 2026-06-302026-08-14acceptance time not in the bulk data set
13F-HR 0001420506-26-001077 Quarter ended 2026-03-312026-05-15acceptance time not in the bulk data set
13F-HR 0001420506-26-000339 Quarter ended 2025-12-312026-02-13acceptance time not in the bulk data set
13F-HR/A 0001420506-25-003515 Quarter ended 2025-09-302025-12-01acceptance time not in the bulk data set
13F-HR 0001420506-25-003102 Quarter ended 2025-09-302025-11-12acceptance time not in the bulk data set
13F-HR 0001420506-25-001976 Quarter ended 2025-06-302025-08-13acceptance time not in the bulk data set
13F-HR 0001420506-25-000872 Quarter ended 2025-03-312025-05-05acceptance time not in the bulk data set
13F-HR 0001420506-25-000362 Quarter ended 2024-12-312025-02-13acceptance time not in the bulk data set
13F-HR 0001741129-24-000006 Quarter ended 2024-09-302024-11-13acceptance time not in the bulk data set
13F-HR 0001741129-24-000005 Quarter ended 2024-06-302024-08-14acceptance time not in the bulk data set
13F-HR 0001741129-24-000004 Quarter ended 2024-03-312024-05-15acceptance time not in the bulk data set
13F-HR/A 0001741129-24-000003 Quarter ended 2023-12-312024-04-02acceptance time not in the bulk data set
13F-HR 0001741129-24-000002 Quarter ended 2023-12-312024-02-14acceptance time not in the bulk data set
13F-HR/A 0001741129-23-000010 Quarter ended 2023-09-302023-11-21acceptance time not in the bulk data set
13F-HR 0001741129-23-000009 Quarter ended 2023-09-302023-11-14acceptance time not in the bulk data set
13F-HR 0001741129-23-000008 Quarter ended 2023-06-302023-08-14acceptance time not in the bulk data set
13F-HR/A 0001741129-23-000005 Quarter ended 2023-03-312023-05-23acceptance time not in the bulk data set
13F-HR 0001741129-23-000004 Quarter ended 2023-03-312023-05-15acceptance time not in the bulk data set
13F-HR 0001741129-23-000003 Quarter ended 2022-12-312023-02-14acceptance time not in the bulk data set
13F-HR 0001741129-22-000010 Quarter ended 2022-09-302022-11-15acceptance time not in the bulk data set
13F-HR/A 0001741129-22-000007 Quarter ended 2022-06-302022-08-17acceptance time not in the bulk data set
13F-HR 0001741129-22-000006 Quarter ended 2022-06-302022-08-15acceptance time not in the bulk data set
13F-HR 0001741129-22-000004 Quarter ended 2022-03-312022-05-16acceptance time not in the bulk data set
13F-HR 0001741129-22-000003 Quarter ended 2021-12-312022-02-15acceptance time not in the bulk data set
13F-HR 0001741129-21-000008 Quarter ended 2021-09-302021-11-12acceptance time not in the bulk data set
13F-HR 0001741129-21-000006 Quarter ended 2021-06-302021-08-16acceptance time not in the bulk data set
13F-HR 0001843527-21-000003 Quarter ended 2021-03-312021-05-17acceptance time not in the bulk data set
13F-HR 0001741129-21-000003 Quarter ended 2020-12-312021-02-16acceptance time not in the bulk data set
13F-HR/A 0001741129-21-000004 Quarter ended 2020-12-312021-02-16acceptance time not in the bulk data set
13F-HR 0001741129-20-000006 Quarter ended 2020-09-302020-11-16acceptance time not in the bulk data set
13F-HR 0001741129-20-000005 Quarter ended 2020-06-302020-08-14acceptance time not in the bulk data set
13F-HR 0001741129-20-000003 Quarter ended 2020-03-312020-05-15acceptance time not in the bulk data set
13F-HR 0001741129-20-000002 Quarter ended 2019-12-312020-02-14acceptance time not in the bulk data set