VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Tuesday, October 28, 2025

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Tool Comparison

Insider Monitor vs PCAOB AuditorSearch comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

Insider Monitor adds Insider Data coverage that PCAOB AuditorSearch skips.

In depth comparison

Insider Monitor logo

Insider Monitor

insider-monitor.com

Free, U.S.-focused insider‑trading tracker centered on SEC Forms 3/4/5. Provides near‑real‑time (‘minutes or seconds’ after filing) feeds of insider purchases/sales, weekly/monthly Top‑10 lists, and “officer cluster buys” over the past two weeks. Includes company and trader pages with CIK cross‑references and direct links to the SEC for each transaction. No login, alerts, or API are advertised; this is a lightweight, public reference site.

Platforms

Web

Pricing

Free

Quick highlights

  • Real‑time insider tape: lists purchases (or buys & sales) with filing time stamps and SEC links; updated live throughout the day.
  • Officer Cluster Buys: highlights tickers bought by multiple corporate officers in the last two weeks.
  • Top‑10 lists: weekly and monthly leaderboards of the largest insider purchases.
  • Industry lens: aggregates Form 4 filing counts by high‑level industry divisions since 2020.
  • Company & trader dossiers: symbol/issuer pages and insider pages with year/month summaries and per‑trade details, including CIK references and SEC source links.

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PCAOB AuditorSearch logo

PCAOB AuditorSearch

pcaobus.org

Free public database built from Form AP filings. Users can search audit engagements by company, firm, or partner, or download the full dataset as a CSV file updated daily. Bulk downloads are timestamped in Eastern Time and do not include the ticker field.

Platforms

Web

Pricing

Free

Quick highlights

  • Searchable by engagement partner, audit firm, or public company, with support for company name, CIK, ticker, and firm identifiers.
  • Displays engagement partner details, audit firm name and location, and the extent of participation of other firms.
  • Bulk dataset download in CSV format, updated daily. The file includes all Form AP data fields documented in the dictionary, with timestamps in Eastern Time.
  • Form AP filings are required for each audit of a public company, forming the core of the database.
  • Advanced search tools and a contact form are available for deeper queries and user support.

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Where they differ

Insider Monitor

Distinct strengths include:

Insider Data
  • Real‑time insider tape: lists purchases (or buys & sales) with filing time stamps and SEC links; updated live throughout the day.
  • Officer Cluster Buys: highlights tickers bought by multiple corporate officers in the last two weeks.
  • Top‑10 lists: weekly and monthly leaderboards of the largest insider purchases.
  • Industry lens: aggregates Form 4 filing counts by high‑level industry divisions since 2020.

Feature-by-feature breakdown

AttributeInsider MonitorPCAOB AuditorSearch
Categories

Which research workflows each platform targets

Shared: Regulatory Filings Monitoring

Unique: Insider Data

Shared: Regulatory Filings Monitoring

Asset types

Supported asset classes and universes

Stocks, Closed-End Funds

Other

Experience levels

Who each product is built for

Beginner, Intermediate, Advanced

Beginner, Intermediate, Advanced

Platforms

Where you can access the product

Web

Web

Pricing

High-level pricing models

Free

Free

Key features

Core capabilities called out by each vendor

Unique

  • Real‑time insider tape: lists purchases (or buys & sales) with filing time stamps and SEC links; updated live throughout the day.
  • Officer Cluster Buys: highlights tickers bought by multiple corporate officers in the last two weeks.
  • Top‑10 lists: weekly and monthly leaderboards of the largest insider purchases.
  • Industry lens: aggregates Form 4 filing counts by high‑level industry divisions since 2020.
  • Company & trader dossiers: symbol/issuer pages and insider pages with year/month summaries and per‑trade details, including CIK references and SEC source links.

Unique

  • Searchable by engagement partner, audit firm, or public company, with support for company name, CIK, ticker, and firm identifiers.
  • Displays engagement partner details, audit firm name and location, and the extent of participation of other firms.
  • Bulk dataset download in CSV format, updated daily. The file includes all Form AP data fields documented in the dictionary, with timestamps in Eastern Time.
  • Form AP filings are required for each audit of a public company, forming the core of the database.
  • Advanced search tools and a contact form are available for deeper queries and user support.
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Frequently Asked Questions

Which workflows do Insider Monitor and PCAOB AuditorSearch both support?

Both platforms cover Regulatory Filings Monitoring workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do Insider Monitor and PCAOB AuditorSearch require subscriptions?

Both Insider Monitor and PCAOB AuditorSearch keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Insider Monitor and PCAOB AuditorSearch?

Both Insider Monitor and PCAOB AuditorSearch prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

Insider Monitor differentiates itself with Real‑time insider tape: lists purchases (or buys & sales) with filing time stamps and SEC links; updated live throughout the day., Officer Cluster Buys: highlights tickers bought by multiple corporate officers in the last two weeks., and Top‑10 lists: weekly and monthly leaderboards of the largest insider purchases., whereas PCAOB AuditorSearch stands out for Searchable by engagement partner, audit firm, or public company, with support for company name, CIK, ticker, and firm identifiers., Displays engagement partner details, audit firm name and location, and the extent of participation of other firms., and Bulk dataset download in CSV format, updated daily. The file includes all Form AP data fields documented in the dictionary, with timestamps in Eastern Time..

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Stay on top of related tools

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.