Fastly, Inc.
Fastly, Inc. (FSLY) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · FSLY · as of Sep 30, 2025
Ownership Breakdown
263
Institutional Holders
▲ 4 vs Q2
$900.21M
Total Inst. Value
▲ $192.42M vs Q2
156.50M
Shares Outstanding
freeFloat 92.81%
105.28M
13F Shares Held
▲ 5.03M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
FSLY largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC services-prepackaged software | 16.67M | 11.43% | 11.43% | $142.50B | Nov 7, 2025 | ▲ 554.9K |
BLACKROCK, INC. services-prepackaged software | 12.58M | 8.63% | 8.63% | $107.53B | Nov 12, 2025 | ▲ 303.9K |
LEGAL & GENERAL GROUP PLC services-prepackaged software | 8.79M | 6.03% | 6.03% | $75.13B | Nov 13, 2025 | ▼ 156.5K |
MORGAN STANLEY services-prepackaged software | 7.27M | 4.99% | 4.99% | $62.14B | May 27, 2026 | ▼ 24.3K |
PENSERRA CAPITAL MANAGEMENT LLC services-prepackaged software | 7.24M | 4.96% | 4.96% | $61.86B | Nov 4, 2025 | ▲ 7.24M |
DIMENSIONAL FUND ADVISORS LP services-prepackaged software | 4.14M | 2.84% | 2.84% | $35.38B | Nov 12, 2025 | ▲ 117.2K |
GEODE CAPITAL MANAGEMENT, LLC services-prepackaged software | 3.24M | 2.23% | 2.23% | $27.74B | Nov 12, 2025 | ▲ 32.2K |
STATE STREET CORP services-prepackaged software | 3.16M | 2.16% | 2.16% | $26.98B | Nov 14, 2025 | ▲ 28.1K |
FIRST TRUST ADVISORS LP services-prepackaged software | 2.72M | 1.87% | 1.87% | $23.25B | Nov 12, 2025 | ▼ 10.9K |
ROYAL BANK OF CANADA services-prepackaged software | 2.54M | 1.74% | 1.74% | $21.72B | Nov 14, 2025 | ▼ 113.4K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
26
Increased
+14.78M shares2
New Positions
first time holders19
Decreased
−6.07M shares0
Sold Out
fully exitedNet shares change (top 50)
+8.71M
+14.78M / −6.07M
Net new holders
+9
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
FSLY insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
8
Buy transactions
24
Sell transactions
0.33
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Hornik David director | Jun 3, 2026 | Award | 9,601 | — | — | 269.4K | Form 4 ↗ |
Meyers Charles J director | Jun 3, 2026 | Award | 9,601 | — | — | 97.8K | Form 4 ↗ |
PAISLEY CHRISTOPHER B director | Jun 3, 2026 | Award | 9,601 | — | — | 14.8K | Form 4 ↗ |
Compton Charles Lacey III CEO | Jun 3, 2026 | Sale | 3,482 | $20.17 | $70.2K | 1.07M | Form 4 ↗ |
Compton Charles Lacey III CEO | Jun 3, 2026 | Sale | 5,746 | $21.15 | $121.5K | 1.06M | Form 4 ↗ |
Compton Charles Lacey III CEO | Jun 3, 2026 | Sale | 85 | $21.85 | $1.9K | 1.06M | Form 4 ↗ |
Smith Vanessa C. director | Jun 3, 2026 | Award | 9,601 | — | — | 98.3K | Form 4 ↗ |
Bergman Artur Chief Technology Officer | Jun 3, 2026 | Sale | 1,100 | $19.84 | $21.8K | 2.05M | Form 4 ↗ |
Bergman Artur Chief Technology Officer | Jun 3, 2026 | Sale | 6,689 | $21.13 | $141.3K | 2.04M | Form 4 ↗ |
Bergman Artur Chief Technology Officer | Jun 3, 2026 | Sale | 100 | $21.83 | $2.2K | 2.04M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Fastly, Inc. (FSLY) is primarily owned by institutional investors, who hold approximately 67.3% of total shares outstanding. Company insiders own approximately 7.19%, while retail and public investors account for the remaining 25.54%.
The largest institutional shareholder of Fastly, Inc. is VANGUARD GROUP INC, holding approximately 16.67 million shares — equal to 11.43% of outstanding shares — as of September 30, 2025.
A total of 263 institutional investors currently hold FSLY stock, with a combined institutional value of approximately $900,210,680 as of the most recent 13F filing period.
Frequently asked questions
FSLY ownershipFastly, Inc. (FSLY) is primarily owned by institutional investors, who hold approximately 67.3% of shares. The largest shareholder is VANGUARD GROUP INC with a 11.43% stake. Company insiders hold 7.19%. Data sourced from SEC Form 13F as of September 30, 2025.