Matthew J. Diliberto
CIK 1629731 · View on SEC EDGAR ↗
First SEC filing: Jan. 12, 2015 · Latest: Jan. 12, 2015
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 24, 2023 | SLG | P | 10,000 | $16.44 | $164,400 | 13,000 Direct | +333.33% | Acquired | 255.2% (price as of 2026-08-21) |
| March 12, 2019 | SLG | S | 2,084 | $91.66 | $191,019 | 1,724 Direct | -54.73% | Disposed | -40.0% (price as of 2026-08-21) |
| Oct. 29, 2018 | SLG | S | 31,033 | $92.30 | $2,864,346 | 1,234 Direct | -96.18% | Disposed | -40.4% (price as of 2026-08-21) |
| Oct. 26, 2018 | SLG | S | 3,967 | $92.07 | $365,242 | 32,267 Direct | -10.95% | Disposed | -40.3% (price as of 2026-08-21) |
| March 1, 2017 | SLG | S | 30,000 | $114.79 | $3,443,700 | 1,234 Direct | -96.05% | Disposed | -52.1% (price as of 2026-08-21) |
| Dec. 13, 2016 | SLG | S | 9,100 | $112.69 | $1,025,479 | 1,176 Direct | -88.56% | Disposed | -51.2% (price as of 2026-08-21) |
| Feb. 4, 2015 | SLG | S | 10,000 | $127.52 | $1,275,200 | 780 Direct | -92.76% | Disposed | -56.9% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 24, 2026 | SLG | LTIP Units | Common Stock (18,735) | — | — | 18,735 | Disposed |
| June 23, 2025 | SLG | LTIP Units | Common Stock (19,750) | — | — | 19,750 | Disposed |
| Feb. 13, 2025 | SLG | LTIP Units | Common Stock (19,000) | — | — | 19,000 | Disposed |
| Jan. 29, 2025 | SLG | LTIP Units [F1] | Common Stock (30,778) | — | — | 30,778 | Acquired |
| Jan. 29, 2025 | SLG | LTIP Units [F5] | Common Stock (10,789) | — | — | 10,789 | Acquired |
| Jan. 29, 2025 | SLG | LTIP Units [F7] | Common Stock (4,235) | — | — | 4,235 | Acquired |
| Jan. 29, 2025 | SLG | LTIP Units [F8] | Common Stock (4,235) | — | — | 4,235 | Acquired |
| Jan. 29, 2025 | SLG | LTIP Units | Common Stock (32,360) | — | — | 32,360 | Acquired |
| June 28, 2024 | SLG | LTIP Units | Common Stock (11,500) | — | — | 11,500 | Disposed |
| March 29, 2024 | SLG | LTIP Units | Common Stock (22,000) | — | — | 22,000 | Disposed |
| Jan. 29, 2024 | SLG | LTIP Units [F1] | Common Stock (30,208) | — | — | 30,208 | Acquired |
| Jan. 29, 2024 | SLG | LTIP Units [F5] | Common Stock (8,199) | — | — | 8,199 | Acquired |
| Jan. 29, 2024 | SLG | LTIP Units [F7] | Common Stock (1,766) | — | — | 1,766 | Acquired |
| Jan. 29, 2024 | SLG | LTIP Units [F8] | Common Stock (5,262) | — | — | 5,262 | Acquired |
| Jan. 29, 2024 | SLG | LTIP Units | Common Stock (40,534) | — | — | 40,534 | Acquired |
| Dec. 29, 2023 | SLG | LTIP Units | Common Stock (24,500) | — | — | 24,500 | Disposed |
| March 2, 2023 | SLG | LTIP Units [F1] | Common Stock (42,422) | — | — | 42,422 | Acquired |
| Jan. 30, 2023 | SLG | LTIP Units | Common Stock (20,280) | — | — | 20,280 | Acquired |
| Jan. 30, 2023 | SLG | LTIP Units [F4] | Common Stock (5,983) | — | — | 5,983 | Acquired |
| Jan. 30, 2023 | SLG | LTIP Units [F6] | Common Stock (765) | — | — | 765 | Acquired |
| March 2, 2022 | SLG | LTIP Units | Common Stock (3,541) | — | — | 3,541 | Disposed |
| Jan. 31, 2022 | SLG | LTIP Units | Common Stock (13,500) | — | — | 13,500 | Disposed |
| Jan. 31, 2022 | SLG | LTIP Units [F1] | Common Stock (10,523) | — | — | 10,523 | Acquired |
| Jan. 19, 2022 | SLG | LTIP Units [F5] | Common Stock (1,979) | — | — | 1,979 | Acquired |
| Jan. 19, 2022 | SLG | LTIP Units | Common Stock (12,710) | — | — | 12,710 | Acquired |
| Jan. 19, 2022 | SLG | LTIP Units | Common Stock (13,740) | — | — | 13,740 | Acquired |
| Feb. 9, 2021 | SLG | LTIP Units | Common Stock (13,500) | — | — | 13,500 | Disposed |
| Feb. 4, 2021 | SLG | LTIP Units [F5] | Common Stock (31,020) | — | — | 31,020 | Acquired |
| Feb. 4, 2021 | SLG | LTIP Units [F4] | Common Stock (3,979) | — | — | 3,979 | Acquired |
| Feb. 4, 2021 | SLG | LTIP Units [F1] | Common Stock (3,952) | — | — | 3,952 | Acquired |
| Feb. 19, 2020 | SLG | LTIP Units | Common Stock (9,250) | — | — | 9,250 | Disposed |
| Feb. 3, 2020 | SLG | LTIP Units [F4] | Common Stock (4,548) | — | — | 4,548 | Acquired |
| Feb. 3, 2020 | SLG | LTIP Units [F1] | Common Stock (5,765) | — | — | 5,765 | Acquired |
| Jan. 18, 2020 | SLG | LTIP Units | Common Stock (9,864) | — | — | 9,864 | Acquired |
| March 8, 2019 | SLG | LTIP Units | Common Stock (2,084) | — | — | 2,084 | Disposed |
| March 8, 2019 | SLG | LTIP Units | Common Stock (7,916) | — | — | 7,916 | Disposed |
| Jan. 28, 2019 | SLG | LTIP Units [F1] | Common Stock (5,000) | — | — | 5,000 | Acquired |
| Jan. 8, 2019 | SLG | LTIP Units | Common Stock (5,039) | — | — | 5,039 | Acquired |
| Oct. 26, 2018 | SLG | LTIP Units [F2] | Common Stock (35,000) | — | — | 35,000 | Disposed |
| Feb. 2, 2018 | SLG | LTIP Units [F1] | Common Stock (15,000) | — | — | 15,000 | Acquired |
| Jan. 15, 2018 | SLG | LTIP Units | Common Stock (3,142) | — | — | 3,142 | Acquired |
| March 1, 2017 | SLG | Stock Option (Right to Buy) | Common Stock (30,000) | $90.15 | Dec. 12, 2018 | 30,000 | Disposed |
| Jan. 11, 2017 | SLG | LTIP Units [F7] | Common Stock (648) | — | — | 648 | Acquired |
| Jan. 11, 2017 | SLG | LTIP Units | Common Stock (2,829) | — | — | 2,829 | Acquired |
| Jan. 11, 2017 | SLG | Class O LTIP Units [F1,F2] | Common Stock | — | Jan. 11, 2022 | 15,000 | Acquired |
| Jan. 11, 2017 | SLG | Class O LTIP Units [F1,F2] | Common Stock | — | Jan. 11, 2027 | 15,000 | Acquired |
| Dec. 12, 2016 | SLG | LTIP Units [F2] | Common Stock (9,100) | — | — | 9,100 | Disposed |
| Feb. 29, 2016 | SLG | LTIP Units [F2] | Common Stock (646) | — | — | 646 | Acquired |
| Jan. 29, 2015 | SLG | LTIP Units [F2] | Common Stock (10,000) | — | — | 10,000 | Disposed |
| Jan. 12, 2015 | SLG | LTIP Units [F2] | Common Stock (646) | — | — | 646 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 12, 2015 | SLG | LTIP Units [F1]→ Common Stock (85,695) | 85,695 | Direct |
| Jan. 9, 2015 | SLG | Common Stock | 718 | Direct |
| Jan. 9, 2015 | SLG | 6.5% Series I Cumulative Redeemable Preferred Stock | 4,000 | Direct |
| Jan. 9, 2015 | SLG | LTIP Units→ Common Stock (73,923) | 73,923 | Direct |
| Jan. 9, 2015 | SLG | Stock Option (Right to Buy)→ Common Stock (30,000) | 30,000 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
SLG
CFO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2022 | $575,000 | $725,000 | $2,488,387 | — | — | — | $12,200 | $3,800,587 |
| 2020 | $550,000 | $2,460,000 | $1,336,498 | — | — | — | $11,400 | $4,357,898 |
| 2019 | $550,000 | $1,650,000 | $1,011,997 | — | — | — | $11,200 | $3,223,197 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.