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SEC EDGAR$PLMR

Armstrong Mac sold $457K of PLMR (indirect holdings)

Armstrong Mac (CEO and Chairman) sold 3,500 indirectly-held shares of Palomar Holdings, Inc. (PLMR) at an average of $130.60 ($129.65–$131.37, $0.46M total) across 3 trades on 2026-08-21 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Armstrong Mac
Published Aug 24, 2026, 8:15 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 24, 2026, 8:28 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 the first public report of this transaction, offering new data for short‑term traders.

02

Market read

Provides fresh insider activity data for PLMR, useful for short‑term sentiment assessment.

03

What to watch

Potential tax planning or diversification needs of the CEO; the 10b5‑1 plan may have been pre‑set before any material news.

Relevance 3/10Novelty 4/10Timing: same‑day filing

Background

Form 4 filing discloses insider transactions required by the SEC, providing transparent insight into executive holdings.

Company-level read

Ticker impact

$PLMRBearishMedium confidence
Context

CEO Armstrong Mac sold 3,500 PLMR shares for $457,111 via a 10b5‑1 plan, reducing his stake to 322,388 shares.

Expected impact

Possible modest dip of 1‑2% in the near term.

Evidence & confidence

A $457k sale by the CEO is material for a micro‑cap, but the amount is modest relative to market cap; the pre‑arranged plan reduces signaling strength.

Market effects

Sector

Minimal impact on the broader biotech sector; insider activity is company‑specific.

Regional

No discernible regional effect.

Global

Limited to investors tracking PLMR.

Counterpoint

What could challenge this read

The sale could be a routine liquidity move unrelated to fundamentals, suggesting no bearish implication.

Key entities

  • Executive
    Armstrong Mac

    CEO and Chairman of Palomar Holdings, Inc.

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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