$LYEL

Hill Stephen J. sold $1K of LYEL

Hill Stephen J. (Chief Operating Officer) sold 89 shares of Lyell Immunopharma, Inc. (LYEL) at $14.34 on 2026-08-10.

Original reporting
SEC EDGAR · Hill Stephen J.
Published Aug 11, 2026, 8:18 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 11, 2026, 8:24 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.
AlphAI market briefInsider activity
Primary signal
$LYEL
Neutral
low confidence
Mentioned
$LYEL
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$LYELNeutralLow
01

Why it matters

A COO open-market sale of 89 shares at $14.34 is disclosed; no new guidance, trial result, deal, or regulatory action is mentioned.

02

Market read

Traders may note the insider sale for sentiment, but the disclosed value is small and does not introduce new fundamental catalysts.

03

What to watch

Insider sales can be driven by tax, diversification, or pre-existing personal liquidity needs; without context on total holdings or prior sales, signal quality is low.

Relevance 3/10Novelty 2/10Timing: filed 2026-08-11 after-hours/late session; reflects sale executed 2026-08-10

Background

The article is an SEC Form 4 insider transaction disclosure for Lyell Immunopharma, Inc.

Company-level read

Ticker impact

$LYELNeutralLow confidence
Context

Lyell Immunopharma COO Stephen J. Hill sold 89 shares at $14.34 on 2026-08-10, totaling $1,276.26, per Form 4.

Expected impact

Low likelihood of a sustained price move; any reaction would likely be brief and limited to intraday sentiment.

Evidence & confidence

The transaction size is small ($1.3k) and the filing provides no new company-specific operational or financial information.

Market effects

No clear sector read-through from a small insider sale at a single biotech name.

None indicated.

None indicated.

Counterpoint

The absence of a disclosed 10b5-1 plan could be interpreted as discretionary selling, but the dollar amount is too small to be a strong signal.

Key entities

  • Lyell Immunopharma, Inc.

    Subject of the Form 4 insider transaction disclosure.

  • Stephen J. Hill

    Chief Operating Officer who sold 89 shares.

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.

Related articles

$LYELMed

Lyell Immunopharma Reports Business Highlights and Financial Results for the Second Quarter 2026

Lyell Immunopharma, Inc. (LYEL) filed an SEC Form 8-K — Results of Operations and Financial Condition. Exhibit 99.1 Lyell Immunopharma Reports Business Highlights and Financial Results for the Second Quarter 2026 • PiNACLE pivotal clinical trial evaluating ronde-cel in 3L+ patients with LBCL on track to report additional data in second half of 2026, with pivotal data expected mid-