SLG · Insider Trading

SL Green Realty Corp.

Every open-market purchase and sale reported by SLG officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
6
code S
Reporting Insiders
9
current holders
SLG — Recent Form 4 Transactions (latest 2026-09-28)
FiledInsiderRole TypeSharesValue
2026-09-28 Marc Holliday Chief Executive Officer D −92,025 deriv. —
2026-08-24 Harrison Sitomer PRESIDENT & CIO Sell −40,000 −$2.32M
2026-06-25 Matthew J. DiLiberto CHIEF FINANCIAL OFFICER D −18,735 deriv. —
2026-06-25 Marc Holliday PRESIDENT & CEO D −92,025 deriv. —
2026-06-02 Andrew W Mathias Director D −100,000 deriv. —
2026-05-06 Andrew S Levine CHIEF LEGAL OFFICER & GC D −33,542 deriv. —
2026-05-06 Matthew J. DiLiberto CHIEF FINANCIAL OFFICER D −19,000 deriv. —
2026-03-30 Carol N Brown Director Sell −5,004 −$181.77K
2026-03-10 Harrison Sitomer PRESIDENT & CIO A +85,492 —
2026-02-17 Andrew W Mathias Director A +201,234 deriv. —
2026-02-17 Matthew J. DiLiberto CHIEF FINANCIAL OFFICER A +195,824 deriv. —
2026-02-17 Andrew S Levine CHIEF LEGAL OFFICER & GC A +74,688 deriv. —
2026-02-17 Marc Holliday PRESIDENT & CEO A +361,929 deriv. —
2026-02-03 Matthew J. DiLiberto CHIEF FINANCIAL OFFICER D −11,600 deriv. —
2026-02-03 Marc Holliday PRESIDENT & CEO D −63,036 deriv. —
2026-02-03 Andrew S Levine CHIEF LEGAL OFFICER & GC D −10,830 deriv. —
2026-02-02 Craig M Hatkoff Director D −5,004 −$227.38K
2026-01-09 John H Alschuler Jr Director MIXED −1,644 deriv. —
2026-01-06 Peggy Lamb Director A +5,004 deriv. —
2026-01-06 Lauren B. Dillard Director A +5,004 —
2026-01-06 Craig M Hatkoff Director A +5,004 —
2026-01-06 Andrew W Mathias Director A +5,004 deriv. —
2026-01-06 Stephen L Green Director A +5,004 deriv. —
2026-01-06 Carol N Brown Director A +5,004 —
2025-12-29 Marc Holliday PRESIDENT & CEO MIXED — −$986.70K
2025-12-23 Andrew S Levine CHIEF LEGAL OFFICER & GC Sell −1,493 −$67.59K
2025-12-18 Marc Holliday PRESIDENT & CEO A +35,833 deriv. —
2025-09-12 Carol N Brown Director Sell −937 −$59.12K
2025-07-18 Carol N Brown Director Sell −2,500 −$151.53K
2025-06-30 Marc Holliday PRESIDENT & CEO D −121,838 deriv. —
2025-06-25 Matthew J. DiLiberto CHIEF FINANCIAL OFFICER D −19,750 deriv. —
2025-04-01 Peggy Lamb Director A +4,083 deriv. —
2025-02-20 Marc Holliday PRESIDENT & CEO MIXED — —
2025-02-14 Matthew J. DiLiberto CHIEF FINANCIAL OFFICER D −19,000 deriv. —
2025-02-14 Marc Holliday PRESIDENT & CEO D −100,000 deriv. —
2025-02-14 Andrew S Levine CHIEF LEGAL OFFICER & GC D −30,500 deriv. —
2025-02-03 Lauren B. Dillard Director A +3,437 —
2025-01-31 John H Alschuler Jr Director I −3,289 deriv. —
2025-01-31 Andrew S Levine CHIEF LEGAL OFFICER & GC A +60,723 deriv. —
2025-01-31 Matthew J. DiLiberto CHIEF FINANCIAL OFFICER A +82,397 deriv. —
2025-01-31 Andrew W Mathias Director A +91,470 deriv. —
2025-01-31 Marc Holliday PRESIDENT & CEO A +375,400 deriv. —
2025-01-27 Craig M Hatkoff Director Sell −3,455 −$229.07K
2025-01-06 Andrew W Mathias Director MIXED — —
2025-01-06 John H Alschuler Jr Director MIXED — —
2025-01-03 Stephen L Green Director A +3,436 deriv. —
2025-01-03 Craig M Hatkoff Director A +3,437 —
2025-01-03 Lauren B. Dillard Director A +3,427 —
2025-01-03 Carol N Brown Director A +3,437 —
2024-12-31 Marc Holliday PRESIDENT & CEO A +217,917 deriv. —
SLG — Current Insider Holders
InsiderRole Shares HeldValue
Harrison Sitomer PRESIDENT & CIO 109,468 $5.14M
Andrew W Mathias Director 85,275 $4.01M
Lauren B. Dillard Director 20,448 $961.06K
Matthew J. DiLiberto CHIEF FINANCIAL OFFICER 13,000 $611.00K
Marc Holliday Chief Executive Officer 10,227 $480.70K
Andrew S Levine CHIEF LEGAL OFFICER & GC 7,045 $331.13K
John H Alschuler Jr Director 6,585 $309.50K
Craig M Hatkoff Director 2,052 $96.44K
Stephen L Green Director 103 $4.84K
SLG Insider Trading FAQ
Who are the insiders at SLG?
9 officers, directors and 10%+ beneficial owners currently report holdings in SLG via SEC Form 4.
Are SLG insiders buying or selling?
Across the 50 most recent Form 4 filings for SLG, 0 were open-market purchases (code P) and 6 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is SLG insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent SLG filing is dated 2026-09-28.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the SLG quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.