Insider Cluster-Buying

Open-market insider BUYS (SEC Form 4, code P) over the last 90 days — corporate insiders putting their own cash in, especially on weakness, is a high-conviction accumulation tell. Cluster buys (several insiders, or large $) rank highest. Open-market buying is RARE in mega-caps, so this is far richer on broad / small-cap universes. Decision-support, not advice.

Universe

48 of 48 buying · S&P 500

3× buyersMTDRMatador Resources CompanyEnergy
$885k bought · latest 2026-08-13 (2d ago) · -20% off 52wH
cluster
87
- Foran Joseph Wm · Director, Chairman and CEO10,000 @ $52.16 $522k · 2026-08-12
- Foran Joseph Wm · Director, Chairman and CEO5,000 @ $51.44 $257k · 2026-08-13
- Calvert Christopher P · EVP and CFO1,500 @ $53.24 $80k · 2026-05-29
- Stetson Glenn W · EVP and COO500 @ $53.41 $27k · 2026-06-09
2× buyersLILAKLiberty Latin America Ltd.Communication Services
$2.0M bought · latest 2026-06-25 (51d ago) · -4% off 52wH
cluster
87
- FRIES MICHAEL T · Director, Executive Chairman49,382 @ $20.39 $1.0M · 2026-06-25
- Nair Balan · Director, President and CEO151,759 @ $4.95 $752k · 2026-06-18
- Nair Balan · Director, President and CEO13,155 @ $18.95 $249k · 2026-06-18
3× buyersKMPRKemper CorporationFinancials
$262k bought · latest 2026-08-11 (4d ago) · -50% off 52wH
cluster
86
- Gorevic Jason N · Director5,000 @ $25.91 $130k · 2026-08-10
- LADERMAN GERALD · Director4,000 @ $26.49 $106k · 2026-08-11
- Camden Bradley T · EVP and CFO1,000 @ $26.34 $26k · 2026-08-11
RHRHConsumer Discretionary
$1.8M bought · latest 2026-06-29 (47d ago) · -29% off 52wH
cluster
81
- ALBERINI CARLOS · Director5,586 @ $161.34 $901k · 2026-06-29
- ALBERINI CARLOS · Director5,502 @ $160.58 $884k · 2026-06-29
- ALBERINI CARLOS · Director300 @ $158.50 $48k · 2026-06-29
2× buyersLTCLTC Properties, Inc.Real Estate
$501k bought · latest 2026-06-04 (72d ago) · -6% off 52wH
cluster
79
- BOITANO DAVID M · EVP & CIO5,000 @ $34.85 $174k · 2026-06-04
- BOITANO DAVID M · EVP & CIO5,000 @ $34.69 $173k · 2026-06-04
- Gruber David L · Director4,000 @ $38.41 $154k · 2026-05-21
2× buyersCCThe Chemours CompanyMaterials
$145k bought · latest 2026-08-07 (8d ago) · -45% off 52wH
cluster
76
- CRANSTON MARY B · Director6,000 @ $15.82 $95k · 2026-08-07
- HOSTETTER SHANE · Chief Financial Officer3,350 @ $14.94 $50k · 2026-08-06
PRTAProthena Corporation plcHealth Care
$465k bought · latest 2026-06-04 (72d ago) · -25% off 52wH
cluster
74
- SCULLY WILLIAM P · 10% Owner50,000 @ $9.31 $465k · 2026-06-04
2× buyersGRNTGranite Ridge Resources, Inc.Energy
$73k bought · latest 2026-06-09 (67d ago) · -17% off 52wH
cluster
73
- Miller Matthew Reade · Director10,600 @ $4.75 $50k · 2026-06-09
- MCCARTNEY JOHN · Director4,000 @ $5.54 $22k · 2026-05-21
LILALiberty Latin America Ltd.Communication Services
$2.9M bought · latest 2026-08-10 (5d ago) · -3% off 52wH
cluster
71
- MALONE JOHN C · 10% Owner73,455 @ $20.42 $1.5M · 2026-08-07
- MALONE JOHN C · 10% Owner97,955 @ $8.47 $830k · 2026-08-10
- MALONE JOHN C · 10% Owner15,749 @ $20.40 $321k · 2026-08-10
- MALONE JOHN C · 10% Owner29,873 @ $8.50 $254k · 2026-08-07
PEBPebblebrook Hotel TrustReal Estate
$699k bought · latest 2026-06-11 (65d ago) · -8% off 52wH
cluster
71
- BORTZ JON E · Director, Chairman and CEO20,000 @ $17.73 $355k · 2026-06-11
- BORTZ JON E · Director, Chairman and CEO20,000 @ $17.23 $345k · 2026-06-10
PAXPatria Investments LimitedFinancials
$344k bought · latest 2026-05-29 (78d ago) · -35% off 52wH
cluster
62
- Neto Olimpio Matarazzo · Director15,000 @ $11.50 $173k · 2026-05-28
- Neto Olimpio Matarazzo · Director15,000 @ $11.46 $172k · 2026-05-29
PEBOPeoples Bancorp Inc.Financials
$40k bought · latest 2026-07-23 (23d ago) · -2% off 52wH
cluster
62
- Smith Dwight Eric · Director1,000 @ $39.81 $40k · 2026-07-23
PAHCPhibro Animal Health CorporationHealth Care
$318k bought · latest 2026-05-29 (78d ago) · -43% off 52wH
cluster
61
- CORCORAN E THOMAS · Director10,000 @ $31.77 $318k · 2026-05-29
QQnity Electronics, Inc.Information Technology
$138k bought · latest 2026-08-11 (4d ago) · -20% off 52wH
cluster
61
- De Bondt Karin · Director1,000 @ $138.14 $138k · 2026-08-11
MCBMetropolitan Bank Holding Corp.Financials
$90k bought · latest 2026-07-23 (23d ago) · -8% off 52wH
cluster
58
- Dougherty Daniel F · EVP & Chief Financial Officer1,000 @ $89.98 $90k · 2026-07-23
NCLHNorwegian Cruise Line Holdings Ltd.Consumer Discretionary
$2.5M bought · latest 2026-05-22 (85d ago) · -30% off 52wH
cluster
57
- CHIDSEY JOHN · Director, President and CEO153,000 @ $16.37 $2.5M · 2026-05-22
SKWDSkyward Specialty Insurance Group, Inc.Financials
$94k bought · latest 2026-05-21 (86d ago) · -9% off 52wH
cluster
57
- Kuczinski Anthony J · Director1,000 @ $47.20 $47k · 2026-05-21
- Kuczinski Anthony J · Director800 @ $47.00 $38k · 2026-05-21
- Kuczinski Anthony J · Director200 @ $47.00 $9k · 2026-05-21
MBCMasterBrand, Inc.Industrials
$506k bought · latest 2026-06-01 (75d ago) · -36% off 52wH
cluster
56
- Banyard R David · Director, CEO & President60,000 @ $8.43 $506k · 2026-06-01
HDSNHudson Technologies, Inc.Industrials
$424k bought · latest 2026-07-21 (25d ago) · -46% off 52wH
cluster
55
- Hartree Partners, LP · 10% Owner47,708 @ $5.99 $286k · 2026-07-21
- Hartree Partners, LP · 10% Owner17,842 @ $5.99 $107k · 2026-07-20
- Hartree Partners, LP · 10% Owner4,634 @ $5.99 $28k · 2026-07-06
- Hartree Partners, LP · 10% Owner600 @ $5.99 $4k · 2026-07-07
ROCKGibraltar Industries, Inc.Industrials
$50k bought · latest 2026-05-21 (86d ago) · -36% off 52wH
cluster
54
- Bolanowski Katherine · General Counsel, VP, Secretary1,256 @ $35.63 $45k · 2026-05-21
- Bolanowski Katherine · General Counsel, VP, Secretary144 @ $35.66 $5k · 2026-05-21
MGYMagnolia Oil & Gas CorporationEnergy
$123k bought · latest 2026-08-07 (8d ago) · -20% off 52wH
cluster
53
- Ropp Ralph Lewis · Director5,000 @ $24.63 $123k · 2026-08-07
NWBINorthwest Bancshares, Inc.Financials
$140k bought · latest 2026-05-27 (80d ago) · -3% off 52wH
cluster
52
- Hunter Timothy M · Director10,000 @ $13.97 $140k · 2026-05-27
IFFInternational Flavors & FragranMaterials
$20.3M bought · latest 2026-06-01 (75d ago) · -6% off 52wH
cluster
51
- FRIBOURG PAUL J · Director260,000 @ $74.28 $19.3M · 2026-06-01
- FRIBOURG PAUL J · Director13,500 @ $74.49 $1.0M · 2026-06-01
NHINational Health Investors, Inc.Real Estate
$64k bought · latest 2026-06-15 (61d ago) · -20% off 52wH
cluster
50
- MCCABE ROBERT A JR · Director890 @ $71.65 $64k · 2026-06-15
QCRHQCR Holdings, Inc.Financials
$5k bought · latest 2026-06-02 (74d ago) · -1% off 52wH
cluster
50
- Reasner Amy L · Director60 @ $90.25 $5k · 2026-06-02
LULUlululemon athletica inc.Consumer Discretionary
$500k bought · latest 2026-06-15 (61d ago) · -47% off 52wH
cluster
48
- Bergh Charles V · Director4,275 @ $117.05 $500k · 2026-06-15
HOODRobinhood Markets, Inc.Financials
$40.2M bought · latest 2026-06-05 (71d ago) · -38% off 52wH
cluster
47
- Malka Meyer · Director250,000 @ $80.74 $20.2M · 2026-06-05
- Malka Meyer · Director249,000 @ $80.39 $20.0M · 2026-05-28
KRNYKearny Financial Corp.Financials
$30k bought · latest 2026-06-11 (65d ago) · -2% off 52wH
cluster
46
- Wong-Zaza Melvina · Director3,500 @ $8.57 $30k · 2026-06-11
CSGPCoStar Group, Inc.Real Estate
$2.5M bought · latest 2026-08-04 (11d ago) · -65% off 52wH
cluster
43
- FLORANCE ANDREW C · Director, Founder and CEO83,300 @ $29.89 $2.5M · 2026-08-04
HTOH2O AmericaUtilities
$130k bought · latest 2026-07-01 (45d ago) · -5% off 52wH
cluster
42
- ATLAS Infrastructure Partners (UK) Ltd. · 10% Owner2,132 @ $60.76 $130k · 2026-07-01
HLNEHamilton Lane IncorporatedFinancials
$1.1M bought · latest 2026-06-11 (65d ago) · -35% off 52wH
cluster
41
- BERKMAN DAVID J · Director15,000 @ $76.27 $1.1M · 2026-06-11
HUBSHubSpot, Inc.Information Technology
$200k bought · latest 2026-08-10 (5d ago) · -57% off 52wH
cluster
39
- Dischler Gerald · Director925 @ $215.93 $200k · 2026-08-10
CDNLCardinal Infrastructure Group Inc.Industrials
$1.0M bought · latest 2026-05-27 (80d ago) · -59% off 52wH
cluster
37
- Wood Benjamin · CHIEF OPERATING OFFICER6,739 @ $49.89 $336k · 2026-05-27
- Wood Benjamin · CHIEF OPERATING OFFICER5,355 @ $50.78 $272k · 2026-05-27
- Wood Benjamin · CHIEF OPERATING OFFICER4,206 @ $51.90 $218k · 2026-05-27
- Wood Benjamin · CHIEF OPERATING OFFICER3,600 @ $53.90 $194k · 2026-05-27
MDWDMediWound Ltd.Health Care
$2k bought · latest 2026-05-29 (78d ago) · -33% off 52wH
cluster
37
- Rubinstein Samuel · Director150 @ $14.33 $2k · 2026-05-29
LLoews CorporationFinancials
$524k bought · latest 2026-05-29 (78d ago) · -7% off 52wH
cluster
36
- Robusto Dino · Director5,000 @ $104.74 $524k · 2026-05-29
HIMSHims & Hers Health, Inc.Health Care
$1.2M bought · latest 2026-05-26 (81d ago) · -57% off 52wH
cluster
34
- WELLS DAVID B · Director48,400 @ $24.23 $1.2M · 2026-05-26
MSTRStrategy IncInformation Technology
$5k bought · latest 2026-05-22 (85d ago) · -75% off 52wH
cluster
33
- Le Phong · Director, President & CEO50 @ $99.41 $5k · 2026-05-22
- Le Phong · Director, President & CEO5 @ $99.37 $497 · 2026-05-22
BETRBetter Home & Finance Holding CompanyFinancials
$388k bought · latest 2026-05-21 (86d ago) · -85% off 52wH
cluster
32
- Garg Vishal · Director, Chief Executive Officer, 10% Owner15,600 @ $24.89 $388k · 2026-05-21
IBKRInteractive Brokers Group, Inc.Financials
$4k bought · latest 2026-07-01 (45d ago) · -6% off 52wH
cluster
32
- Conkling Lori A · Director25 @ $88.03 $2k · 2026-07-01
- Conkling Lori A · Director25 @ $86.10 $2k · 2026-06-01
ILPTIndustrial Logistics Properties TrustReal Estate
$18k bought · latest 2026-05-22 (85d ago) · -5% off 52wH
cluster
31
- PHELAN KEVIN C · Director2,000 @ $8.87 $18k · 2026-05-22
JHXJames Hardie Industries plcMaterials
$69k bought · latest 2026-06-02 (74d ago) · -1% off 52wH
cluster
30
- Rowland Suzanne B · Director3,000 @ $22.91 $69k · 2026-06-02
BCMLBayCom CorpFinancials
$155k bought · latest 2026-05-26 (81d ago) · -11% off 52wH
cluster
28
- PERDUE MICHAEL J · Director3,000 @ $30.94 $93k · 2026-05-26
- PERDUE MICHAEL J · Director2,000 @ $30.94 $62k · 2026-05-22
CMTCore Molding Technologies, Inc.Materials
$6k bought · latest 2026-06-29 (47d ago) · -12% off 52wH
cluster
28
- Panda Alex Joseph · EVP, Treasurer, Secretary, CFO275 @ $23.59 $6k · 2026-06-29
GVAGranite Construction IncorporatedIndustrials
$107k bought · latest 2026-06-15 (61d ago) · -22% off 52wH
cluster
26
- Romer John Timothy · Director375 @ $141.79 $53k · 2026-06-12
- Romer John Timothy · Director273 @ $143.40 $39k · 2026-06-15
- Romer John Timothy · Director102 @ $144.32 $15k · 2026-06-15
CCBCoastal Financial CorporationFinancials
$13k bought · latest 2026-08-07 (8d ago) · -56% off 52wH
cluster
24
- Adams Christopher D · Director, Executive Chair290 @ $45.15 $13k · 2026-08-07
GSHDGoosehead Insurance, Inc.Financials
$208k bought · latest 2026-05-18 (89d ago) · -26% off 52wH
cluster
23
- Thornthwaite Martin Ellis · General Counsel5,000 @ $41.50 $208k · 2026-05-18
HROWHarrow, Inc.Health Care
$31k bought · latest 2026-05-18 (89d ago) · -27% off 52wH
cluster
21
- Graves Adrienne L · Director1,000 @ $31.07 $31k · 2026-05-18
BETABETA Technologies, Inc.Industrials
$250k bought · latest 2026-05-19 (88d ago) · -37% off 52wH
cluster
14
- Stone Michael Robert · Director17,135.023 @ $14.59 $250k · 2026-05-19

Cluster score = blended percentile of # distinct buyers (50%), $ bought ÷ market cap (30%) and recency (20%). SEC Form 4 open-market purchases (code P) via data/insiders.json · as of 2026-08-15. Not investment advice.