Gary A Shiffman

CIK 1171077 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 13, 2023 · Latest: Feb. 13, 2023

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Insider at

Insider transactions

0 buys (P) 2 sells (S) Net: $-22,381,488 + 89 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

89 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
June 24, 2026 SUI S 25,031 $119.96 $3,002,719 857,761 Direct -2.84% Disposed 2.1% (price as of 2026-08-20)
Dec. 17, 2025 SUI S 156,875 $123.53 $19,378,769 0 Indirect -100.00% Disposed -0.9% (price as of 2026-08-20)
Nov. 1, 2021 SUI P 233,417 $193.42 $45,147,516 940,253 Direct -19.89% Disposed -36.7% (price as of 2026-08-20)
Aug. 16, 2021 SUI P 129,486 $197.42 $25,563,126 1,173,670 Direct +12.40% Acquired -38.0% (price as of 2026-08-20)
July 28, 2021 SUI P 234,934 $194.20 $45,624,183 1,044,184 Direct +29.03% Acquired -36.9% (price as of 2026-08-20)
May 25, 2021 SUI S 800 $168.53 $134,824 757,828 Direct -0.11% Disposed -27.3% (price as of 2026-08-20)
May 25, 2021 SUI S 39,778 $168.11 $6,687,080 758,628 Direct -4.98% Disposed -27.1% (price as of 2026-08-20)
May 24, 2021 SUI S 32,422 $167.63 $5,434,900 798,406 Direct -3.90% Disposed -26.9% (price as of 2026-08-20)
Dec. 4, 2019 SUI S 54,217 $161.82 $8,773,395 1,334,517 Direct -3.90% Disposed -24.3% (price as of 2026-08-20)
Dec. 3, 2019 SUI S 5,627 $163.31 $918,945 1,388,734 Direct -0.40% Disposed -25.0% (price as of 2026-08-20)
Dec. 3, 2019 SUI S 55,156 $162.31 $8,952,370 1,394,361 Direct -3.81% Disposed -24.5% (price as of 2026-08-20)

Showing latest 100 of 467 transactions

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
Dec. 9, 2025 SUI COMMON OPERATING PARTNERSHIP UNITS COMMON STOCK, $0.01 PAR VALUE (156,875) $0.00 — 156,875 Disposed
Jan. 22, 2022 SUI COMMON OPERATING PARTNERSHIP UNITS COMMON STOCK, $0.01 PAR VALUE (156,875) $0.00 — 156,875 Acquired
July 27, 2021 SUI COMMON OPERATING PARTNERSHIP UNITS COMMON STOCK, $0.01 PAR VALUE (106,249) $0.00 — 106,249 Acquired
April 27, 2017 SUI COMMON OPERATING PARTNERSHIP UNITS COMMON STOCK, $0.01 PAR VALUE (394,141) $0.00 — 394,141 Disposed
April 27, 2017 SUI COMMON OPERATING PARTNERSHIP UNITS COMMON STOCK, $0.01 PAR VALUE (40,287) $0.00 — 40,287 Disposed
April 27, 2017 SUI COMMON OPERATING PARTNERSHIP UNITS COMMON STOCK, $0.01 PAR VALUE (434,428) $0.00 — 434,428 Acquired
Dec. 20, 2012 SUI Common Operating Partnership Units Common Stock (40,287) $0.00 — 40,287 Acquired
Dec. 20, 2012 SUI Common Operating Partnership Units Common Stock (40,287) $0.00 — 40,287 Disposed
Dec. 20, 2012 SUI Common Operating Partnership Units Common Stock (40,287) $0.00 — 40,287 Acquired
Dec. 20, 2012 SUI Common Operating Partnership Units Common Stock (40,287) $0.00 — 40,287 Disposed
March 23, 2011 SUI Stock Option [F2] Common Stock (25,000) $27.03 April 12, 2011 25,000 Disposed
Dec. 29, 2007 SUI Common Operating Partnership Units Common Stock (25,000) — — 25,000 Acquired
Oct. 26, 2006 SUI Stock Option [F2] Common Stock (250,000) $28.64 Oct. 28, 2006 250,000 Disposed
Oct. 26, 2006 SUI Stock Option [F2] Common Stock (25,000) $28.64 Oct. 28, 2006 25,000 Disposed
Oct. 26, 2006 SUI Stock Option [F2] Common Stock (250,000) $28.64 Oct. 28, 2006 250,000 Disposed
Oct. 26, 2006 SUI Stock Option [F2] Common Stock (25,000) $28.64 Oct. 28, 2006 25,000 Disposed
Feb. 21, 2006 SUI Stock Option [F1] Common Stock (25,000) $26.62 March 11, 2006 25,000 Disposed
May 3, 2004 SUI Common Operating Partnership Units Common Stock (141,794) — — 141,794 Acquired
April 26, 2004 SUI Common Operating Partnership Units Common Stock (20,811) — — 20,811 Acquired
Feb. 26, 2004 SUI Common Operating Partnership Units Common Stock (52,000) — — 52,000 Acquired
Jan. 22, 2004 SUI Common Operating Partnership Units Common Stock (10,000) — — 10,000 Acquired
Dec. 17, 2003 SUI Stock Option [F1] Common Stock (50,000) — Dec. 21, 2003 50,000 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

SUI

Chairman,
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2016 $691,837 — $5,193,750 — $791,837 — $3,783 $6,681,207
2015 $691,418 — $6,381,000 — $272,959 — $42,516 $7,387,888
2014 $680,941 $680,941 $249,200 — — — $46,854 $1,657,936

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.