Large Insider Purchases ($100K+)
Insider purchases exceeding $100,000 in value. Large dollar purchases demonstrate significant personal financial commitment and conviction.
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Key Insights
50 companies show large buys activity. Summit Therapeutics Inc. (SMMT) leads with $103.6M in total transaction value from 3 unique insiders. The average transaction value per company is $7.8M. Data sourced from SEC EDGAR Form 4 filings.
Why This Matters
The dollar magnitude of an insider purchase reflects the level of personal conviction and risk tolerance. A $100,000+ transaction represents meaningful personal capital commitment, distinguishing it from token or symbolic purchases. Research suggests that the size of insider purchases is associated with the degree of personal conviction, as larger commitments represent proportionally greater personal risk.
50 companies have insider purchases exceeding $100,000, with a combined value of $389.0M. The average large purchase value per company is $7.8M. The largest transaction value is at Summit Therapeutics Inc. (SMMT) with $103.6M by Zanganeh Mahkam.
The dollar magnitude of insider purchases reflects the level of personal financial commitment and risk tolerance. Research suggests that the size of insider purchases is associated with the degree of personal conviction, as significant personal capital at risk represents a meaningful financial commitment. However, the significance of a given dollar amount varies by the insider's compensation level and net worth, which are not always publicly available.
Form 4 filings are required to be filed within 2 business days of a transaction. Some transactions may be part of pre-planned 10b5-1 trading plans. Insider trading data reflects SEC EDGAR public filings and may not capture the full context of each transaction.
- -Currently tracking 50 companies with large purchases activity
- -Total transaction value: $389.0M
- -Most recent filing: Jun 22
- -Largest single-company value: $103.6M at Summit Therapeutics Inc.
This is a factual summary of SEC EDGAR filings and does not constitute investment advice.
50 Companies with Insider Activity
| # | Company | Top Insider | Transactions | Total Value | Insiders | Latest |
|---|---|---|---|---|---|---|
| 1 | SMMTSummit Therapeutics Inc. | Zanganeh Mahkam Co-Chief Executive Officer | 6 | $103.6M | 3 | Jun 12 |
| 2 | HOODRobinhood Markets | Malka Meyer | 2 | $35.3M | 1 | Jun 5 |
| 3 | KNOPKNOT Offshore Partners LP | Seglem Trygve | 1 | $25.0M | 1 | Jun 15 |
| 4 | NCLHNorwegian Cruise Line Holdings | PAGLIUCA STEPHEN G | 2 | $25.0M | 1 | Jun 2 |
| 5 | IFFInternational Flavors & Fragrances | FRIBOURG PAUL J | 2 | $20.3M | 1 | Jun 1 |
| 6 | MNSOMINISO Group Holding Ltd | Yang Yunyun (Alice) Vice President | 6 | $13.8M | 2 | Jun 1 |
| 7 | AXIABRAZILIAN ELECTRIC POWER CO | Batista de Lima Filho Pedro | 7 | $13.7M | 1 | Jun 3 |
| 8 | FBINFortune Brands Innovations | GARDEN EDWARD P | 1 | $13.0M | 1 | Jun 10 |
| 9 | AUPHAurinia Pharmaceuticals Inc. | TANG KEVIN Chief Executive Officer | 3 | $12.4M | 1 | Jun 2 |
| 10 | AVOMission Produce, Inc. | Taylor Bruce C. | 9 | $11.2M | 2 | Jun 17 |
| 11 | WGSGeneDx Holdings Corp. | Casdin Capital, LLC | 2 | $11.1M | 1 | Jun 5 |
| 12 | NSPInsperity | SARVADI PAUL J Chairman of the Board & CEO | 1 | $7.9M | 1 | Jun 3 |
| 13 | FUNSix Flags | JAFFER REHAN | 2 | $5.9M | 1 | Jun 15 |
| 14 | RDNRadian Group, Inc. | Weinbach Michael S Chief Executive Officer- Elect | 2 | $5.8M | 1 | Jun 2 |
| 15 | STEPStepStone Group | McCabe Michael I Head of Strategy | 2 | $5.0M | 1 | Jun 11 |
| 16 | BORRBorr Drilling Ltd | Troim Tor Olav | 1 | $5.0M | 1 | Jun 9 |
| 17 | NDAQNasdaq, Inc. | INVESTOR AB | 1 | $4.9M | 1 | Jun 11 |
| 18 | PARPAR TECHNOLOGY CORP | Voss Capital, LP | 11 | $4.9M | 2 | Jun 12 |
| 19 | ARTVArtiva Biotherapeutics, Inc. | RA CAPITAL MANAGEMENT, L.P. | 3 | $4.6M | 1 | Jun 16 |
| 20 | RYANRyan Specialty | RYAN PATRICK G Executive Chairman | 3 | $4.4M | 3 | Jun 10 |
| 21 | BLNDBlend Labs, Inc. | Haveli Investments, L.P. | 7 | $4.2M | 1 | Jun 15 |
| 22 | HLNEHamilton Lane | Rogers Hartley R. Executive Co-Chairman | 3 | $4.1M | 2 | Jun 11 |
| 23 | XMTRXometry, Inc. | Biewald Lukas Alexander | 1 | $4.0M | 1 | Jun 3 |
| 24 | CRVOCervoMed Inc. | BOGER JOSHUA S | 1 | $3.0M | 1 | Jun 11 |
| 25 | BSBRBanco Santander (Brasil) S.A. | Leao Mario Roberto Opice CEO | 4 | $2.9M | 1 | Jun 16 |
| 26 | ENREnergizer | Aqua Capital, Ltd. | 6 | $2.7M | 1 | Jun 18 |
| 27 | GLPGLOBAL PARTNERS LP | Global GP LLC | 10 | $2.4M | 1 | Jun 15 |
| 28 | ECLEcolab | Doukeris Michel D | 2 | $2.3M | 2 | Jun 11 |
| 29 | EQPTEquipmentShare.com Inc | Schlacks William J. Co-Founder & President | 3 | $2.1M | 2 | Jun 15 |
| 30 | AMRAlpha Metallurgical Resources, Inc. | Courtis Kenneth S. | 2 | $2.0M | 1 | Jun 12 |
| 31 | ADSKAutodesk | Smith Stacy J | 4 | $1.8M | 3 | Jun 16 |
| 32 | HTOH2O America | ATLAS Infrastructure Partners (UK) Ltd. | 1 | $1.8M | 1 | May 29 |
| 33 | PEBPebblebrook Hotel Trust | BORTZ JON E Chairman and CEO | 5 | $1.7M | 1 | Jun 12 |
| 34 | FISVFiserv | Rosman Adam L. Chief Admin. and Legal Officer | 6 | $1.7M | 6 | Jun 17 |
| 35 | COAGHemab Therapeutics Holdings, Inc. | RA CAPITAL MANAGEMENT, L.P. | 2 | $1.7M | 1 | Jun 16 |
| 36 | PAXPatria Investments Ltd | Neto Olimpio Matarazzo | 6 | $1.7M | 1 | Jun 5 |
| 37 | CECOCECO ENVIRONMENTAL CORP | WALLMAN RICHARD F | 1 | $1.5M | 1 | Jun 1 |
| 38 | ERIEErie Indemnity | Vorsheck Elizabeth A | 3 | $1.4M | 1 | Jun 2 |
| 39 | NVRIEnviri Corporation | Hochman Russell C. President and CEO | 3 | $1.4M | 3 | Jun 5 |
| 40 | AATAmerican Assets Trust | RADY ERNEST S Executive Chairman | 6 | $1.4M | 1 | Jun 15 |
| 41 | GLIBAGCI Liberty, Inc. | DUNCAN RONALD A President and CEO | 3 | $1.4M | 1 | Jun 3 |
| 42 | CXTCrane NXT | Saak Aaron W CEO | 2 | $1.2M | 2 | Jun 12 |
| 43 | LODEComstock Inc. | Pei Steven Yu-Tsung | 2 | $1.0M | 1 | Jun 12 |
| 44 | BRCBrady Corporation | Nargolwala Vineet A President & CEO | 1 | $1.0M | 1 | Jun 10 |
| 45 | MSTRStrategy Inc | Le Phong President & CEO | 1 | $999K | 1 | Jun 22 |
| 46 | GPGIGPGI, Inc. | Knott Thomas R. See remarks | 1 | $995K | 1 | Jun 11 |
| 47 | PTHSPelthos Therapeutics Inc. | Davis Todd C | 1 | $986K | 1 | Jun 11 |
| 48 | BSMBlack Stone Minerals, L.P. | DeWalch D Mark | 2 | $985K | 1 | Jun 1 |
| 49 | DGICADONEGAL GROUP INC | DONEGAL MUTUAL INSURANCE CO | 6 | $943K | 1 | Jun 12 |
| 50 | PODDInsulet Corporation | WEATHERMAN ELIZABETH H | 2 | $898K | 2 | Jun 3 |
Why Track Large Purchases?
The dollar amount of an insider purchase reflects the level of personal conviction. A $500,000 purchase represents a much stronger signal than a $5,000 token buy. Large purchases indicate that the insider is willing to put substantial personal capital at risk, which is associated with the level of personal conviction behind the transaction.
All insider trading data is sourced from SEC EDGAR Form 4 filings, which are public domain documents. Transaction classification (purchase vs. sale) follows SEC reporting standards. Some transactions may be delayed due to SEC filing timelines.
Related Screeners
Frequently Asked Questions
What is an insider trading screener?
An insider trading screener filters stocks based on corporate insider buying and selling activity. Corporate insiders (officers, directors, and 10%+ shareholders) must report their transactions to the SEC via Form 4 filings. This screener aggregates that data to help you identify patterns like cluster buying, CEO purchases, and large transactions.
Where does Billiver get insider trading data?
All insider trading data comes from SEC EDGAR Form 4 filings, which are public domain documents. When a corporate insider buys or sells company stock, they must file a Form 4 with the SEC within two business days. Billiver processes these filings daily to provide up-to-date screener results.
What is the difference between insider buying and insider selling?
Insider buying is generally considered a stronger signal than insider selling. Insiders buy for one reason: they expect the stock to go up. However, insiders sell for many non-negative reasons including diversification, tax planning, home purchases, or exercising expiring options. Academic research consistently finds insider purchases are more predictive of future returns than sales.
What are insider cluster buys?
A cluster buy occurs when 3 or more unique insiders at the same company purchase shares within a 30-day period. Research by Jaffe (1974) and subsequent studies found that cluster buying is more predictive of abnormal returns (approximately 2.1%) than individual insider purchases. The screener excludes pre-planned 10b5-1 transactions to focus on discretionary buying decisions.
Are 10b5-1 plan transactions included?
For purchase-related screeners (latest purchases, CEO buys, cluster buys, etc.), pre-planned 10b5-1 transactions are excluded. These are automated trading plans set up in advance and do not reflect real-time insider sentiment. Sale screeners include all transactions since most insider sales are routine.