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SEC EDGAR$PLMR

Armstrong Mac sold $484K of PLMR (indirect holdings)

Armstrong Mac (CEO and Chairman) sold 3,500 indirectly-held shares of Palomar Holdings, Inc. (PLMR) at an average of $138.31 ($137.60–$139.25, $0.48M total) across 3 trades on 2026-10-21 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Armstrong Mac
Published Oct 22, 2026, 8:15 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 22, 2026, 8:18 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$PLMR
Bearish
medium confidence
Mentioned
$PLMR
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$PLMRBearishLow
01

Why it matters

The disclosed sale is small relative to market cap, likely causing only minor price movement.

02

Market read

A routine insider sale with limited trading relevance.

03

What to watch

Potential upcoming corporate actions or financing needs not disclosed in the filing.

Relevance 3/10Novelty 3/10Timing: after market today

Background

SEC Form 4 filing discloses insider transactions for public companies.

Company-level read

Ticker impact

$PLMRBearishMedium confidence
Context

CEO Armstrong Mac sold 3,500 PLMR shares for $484,097 via a 10b5-1 plan, reducing his stake to 315,388 shares.

Expected impact

likely slight downward pressure as the market prices in the insider sell.

Evidence & confidence

The transaction size is modest ($0.5M) and disclosed via a Form 4, so impact is limited but may signal short‑term weakness.

Market effects

Sector

Minimal effect on the broader biotech sector.

Regional

No regional impact.

Global

Limited to PLMR investors.

Counterpoint

What could challenge this read

The sale could be routine under a pre‑arranged plan and not indicate any negative fundamentals.

Key entities

  • Company
    Palomar Holdings, Inc.

    Biotech firm listed on NASDAQ under ticker PLMR.

  • Person
    Armstrong Mac

    CEO and Chairman of Palomar Holdings.

Read at source← All news

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

PLMR insider trading history →

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