The massive sale by Summit Partners, a 10% owner, is a strong bearish signal. Traders should watch for further insider selling, especially if the CFO or other C-suite members increase their open-market sales. The stock may face downward pressure as the market digests this large block trade. Consider short-term bearish positioning or hedging against downside risk.
Price Chart
Executive Summary
A significant insider selling cluster at Klaviyo, with a 10% owner (Summit Partners) selling $88.55M worth of shares and the CFO selling an additional $259K. The 10% owner's sale represents ~1.8% of market cap, a highly material disposition that signals a potential lack of confidence or a planned exit. The CFO's open-market sale, while smaller, adds to the bearish tone, especially given the cluster's proximity to the large block trade. This is not routine tax withholding; it is a clear, large-scale sell-off by a major insider.
Key Financial Metrics
Key Facts
- Summit Partners L P (10% Owner) sold 5.00M shares at $17.71 for $88.55M on 2026-08-11.
- CFO Amanda Whalen sold 14,000 shares at $18.47 for $258,580 on 2026-08-14.
- Total cluster value is $88.81M, representing ~1.8% of Klaviyo's $5.0B market cap.
- Two other C-suite insiders (CPO, CLO) had tax withholding transactions on 2026-08-15, which are non-cash events and not part of the selling cluster.
Financial Impact
Summit Partners sold $88.55M of stock, representing ~1.8% of the company's market cap. CFO sold an additional $259K.
Risk Factors
- The 10% owner's sale could be for portfolio rebalancing or fund-specific liquidity needs, not necessarily a negative view on Klaviyo's prospects.
- The company's strong analyst consensus (93% bullish) may provide a floor for the stock, limiting downside.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-KVYO-1787098126484 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 7, 2026 19d ago | 144 | $17.57 | awaiting T+20 | — | $20.27 (+15.40%) |
Sep 11, 2026 6w ago | 144 | $16.36 $17.32 | ▲ +5.87% | ▲ +4.00% | $20.27 (+23.93%) |
Sep 1, 2026 7w ago | Insider Cluster | $19.31 $15.73 | ▼ −18.54% | ▼ −18.21% | $20.27 (+5.00%) |
Aug 18, 2026 9w ago | Insider Cluster | $18.20 $15.87 | ▲ +12.80% | ▲ +10.85% | $20.27 (−11.40%) |
Aug 18, 2026 9w ago | Insider Cluster | $18.20 $15.87 | ▲ +12.80% | ▲ +10.85% | $20.27 (−11.40%) |
Aug 11, 2026 10w ago | 144 | $17.25 $16.13 | ▲ +6.49% | ▲ +4.59% | $20.27 (−17.54%) |
May 20, 2026 22w ago | Insider Cluster | $14.91 $12.82 | ▼ −14.02% | ▼ −14.35% | $20.27 (+35.98%) |
May 18, 2026 23w ago | Insider Cluster | $14.70 $13.46 | ▼ −8.44% | ▼ −9.42% | $20.27 (+37.93%) |
May 18, 2026 23w ago | 144 | $14.61 $13.84 | ▼ −5.27% | ▼ −6.85% | $20.27 (+38.77%) |
Apr 29, 2026 25w ago | DEFA14A | $20.09 $15.84 | ▼ −21.15% | ▼ −26.38% | $20.27 (+0.92%) |
US Market Status
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Create a free account Live analysis, Telegram alerts, watchlists and the MCP server for subscribers