The director's $493K buy is too small relative to PLNT's $3.7B market cap to be a meaningful signal. Monitor for additional insider buying or a multi-insider cluster before reading this as bullish. The company's poor historical T+20 performance on prior reports (25% win rate) suggests caution. Next catalyst to watch is the upcoming quarterly earnings release.
Price Chart
Executive Summary
Planet Fitness director Stephen Spinelli Jr. made an open-market purchase of $493K worth of PLNT stock at $49.28 per share. This is a single insider conviction buy, not a cluster, and represents approximately 0.013% of the company's $3.7B market cap — a trivial amount relative to company size. The purchase is notable as a director's cash commitment but lacks the materiality to signal a major inflection point, especially given the company's poor historical T+20 win rate of 25% on prior reports.
Key Financial Metrics
Key Facts
- Director Stephen Spinelli Jr. purchased 10,000 shares at $49.28 for a total of $492,800
- The purchase represents ~0.013% of PLNT's $3.7B market cap — well below the 0.1% materiality threshold
- This is a single insider buy, not a multi-insider cluster, limiting its predictive power
- PLNT's historical T+20 win rate on prior reports is only 25% with an average alpha of -6.07% vs SPY
Financial Impact
$493K open-market purchase by a director, representing 0.013% of market cap
Risk Factors
- Single insider buy lacks the conviction signal of a multi-insider cluster
- Purchase size is trivial at 0.013% of market cap — may be routine portfolio rebalancing
- PLNT has a poor historical track record with only 25% of prior reports generating positive T+20 returns
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| INSIDER-BUY Data (Synthetic) | 0001361944-26-000005 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 26, 2026 5w ago | Press Release | $53.29 $40.72 | ▲ +23.59% | ▲ +23.73% | $42.41 (+20.42%) |
Aug 11, 2026 7w ago | Insider Buy | $48.26 $49.98 | ▲ +3.56% | ▲ +5.46% | $42.41 (−12.12%) |
Aug 3, 2026 8w ago | Press Release | $56.23 $51.60 | ▲ +8.23% | ▲ +9.47% | $42.41 (+24.58%) |
Jul 30, 2026 9w ago | Press Release | $55.98 $51.70 | ▲ +7.65% | ▲ +11.61% | $42.41 (+24.24%) |
Jul 22, 2026 10w ago | Press Release | $54.05 $53.95 | ▲ +0.18% | ▲ +3.08% | $42.41 (+21.54%) |
Jul 15, 2026 11w ago | Press Release | $52.88 $49.10 | ▲ +7.15% | ▲ +10.77% | $42.41 (+19.80%) |
May 8, 2026 21w ago | Insider Cluster | $45.84 $50.68 | ▲ +10.57% | ▲ +10.55% | $42.41 (−7.47%) |
May 7, 2026 21w ago | 8-K | $43.12 $51.53 | ▼ −19.52% | ▼ −16.38% | $42.41 (+1.64%) |
Mar 25, 2026 27w ago | DEFA14A | $75.11 $69.35 | ▼ −7.67% | ▼ −18.33% | $42.41 (−43.53%) |
US Market Status
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