SL Green Realty Corp.
SL Green Realty Corp. (SLG) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SLG · as of Sep 30, 2025
Ownership Breakdown
370
Institutional Holders
▲ 7 vs Q2
$3.70B
Total Inst. Value
▼ $213.63M vs Q2
71.12M
Shares Outstanding
freeFloat 99.68%
61.87M
13F Shares Held
▼ 1.36M 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
SLG largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. real estate investment trusts | 12.53M | 16.86% | 16.86% | $749.61B | Nov 12, 2025 | ▼ 21.7K |
VANGUARD GROUP INC real estate investment trusts | 10.86M | 14.61% | 14.61% | $649.57B | Nov 7, 2025 | ▼ 84.0K |
STATE STREET CORP real estate investment trusts | 4.19M | 5.64% | 5.64% | $251.64B | Nov 14, 2025 | ▼ 68.2K |
ALYESKA INVESTMENT GROUP, L.P. real estate investment trusts | 2.42M | 3.26% | 3.26% | $144.96B | Nov 17, 2025 | ▼ 4.7K |
WELLINGTON MANAGEMENT GROUP LLP real estate investment trusts | 1.89M | 2.54% | 2.54% | $113.06B | Nov 14, 2025 | ▼ 485.0K |
GEODE CAPITAL MANAGEMENT, LLC real estate investment trusts | 1.88M | 2.53% | 2.53% | $112.28B | Nov 12, 2025 | ▲ 43.4K |
GOLDMAN SACHS GROUP INC real estate investment trusts | 1.80M | 2.42% | 2.42% | $107.71B | Nov 14, 2025 | ▲ 322.2K |
PRUDENTIAL FINANCIAL INC real estate investment trusts | 1.72M | 2.31% | 2.31% | $102.68B | Nov 13, 2025 | ▲ 94.2K |
NORTHERN TRUST CORP real estate investment trusts | 1.54M | 2.08% | 2.08% | $92.35B | Nov 14, 2025 | ▲ 54.9K |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC real estate investment trusts | 1.53M | 2.06% | 2.06% | $91.41B | Nov 10, 2025 | ▲ 22.7K |
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
+2.87M shares3
New Positions
first time holders21
Decreased
−1.35M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.52M
+2.87M / −1.35M
Net new holders
+8
3 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
SLG 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.
0
Buy transactions
2
Sell transactions
0.00
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 |
|---|---|---|---|---|---|---|---|
MATHIAS ANDREW W director | May 19, 2026 | D-Return | 100,000 | — | — | 1.12M | Form 4 ↗ |
LEVINE ANDREW S CHIEF LEGAL OFFICER & GC | May 4, 2026 | D-Return | 33,542 | — | — | 253.8K | Form 4 ↗ |
DiLiberto Matthew J. CHIEF FINANCIAL OFFICER | May 4, 2026 | D-Return | 19,000 | — | — | 302.4K | Form 4 ↗ |
Brown Carol N director | Mar 30, 2026 | Sale | 5,004 | $36.33 | $181.8K | 0 | Form 4 ↗ |
Sitomer Harrison PRESIDENT & CIO | Feb 27, 2026 | Award | 85,492 | — | — | 149.5K | Form 4 ↗ |
LEVINE ANDREW S CHIEF LEGAL OFFICER & GC | Feb 12, 2026 | Award | 24,044 | — | — | 287.4K | Form 4 ↗ |
LEVINE ANDREW S CHIEF LEGAL OFFICER & GC | Feb 12, 2026 | Award | 9,316 | — | — | 263.3K | Form 4 ↗ |
LEVINE ANDREW S CHIEF LEGAL OFFICER & GC | Feb 12, 2026 | Award | 9,316 | — | — | 254.0K | Form 4 ↗ |
LEVINE ANDREW S CHIEF LEGAL OFFICER & GC | Feb 12, 2026 | Award | 32,012 | — | — | 244.7K | Form 4 ↗ |
HOLLIDAY MARC PRESIDENT & CEO | Feb 12, 2026 | Award | 125,771 | — | — | 1.62M | 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
SL Green Realty Corp. (SLG) is primarily owned by institutional investors, who hold approximately 87.0% of total shares outstanding. Company insiders own approximately 0.32%, while retail and public investors account for the remaining 12.70%.
The largest institutional shareholder of SL Green Realty Corp. is BLACKROCK, INC., holding approximately 12.53 million shares — equal to 16.86% of outstanding shares — as of September 30, 2025.
A total of 370 institutional investors currently hold SLG stock, with a combined institutional value of approximately $3.70 billion as of the most recent 13F filing period.
Frequently asked questions
SLG ownershipSL Green Realty Corp. (SLG) is primarily owned by institutional investors, who hold approximately 87.0% of shares. The largest shareholder is BLACKROCK, INC. with a 16.86% stake. Company insiders hold 0.32%. Data sourced from SEC Form 13F as of September 30, 2025.