Michael J Zimmerman

Insider

First SEC filing: June 8, 2026 · Latest: June 8, 2026

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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.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 55 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

55 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 9, 2026	SFB	A	2,450	$71.40	$174,930	2,450 Direct	—	Acquired	-72.4% (price as of 2026-08-21)
June 4, 2026	SFB	M	2,812	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
June 4, 2026	SFB	M	2,812	—	—	71,562 Direct	+4.09%	Acquired	(price as of 2026-08-21)
June 6, 2025	SFB	S	5,000	$97.00	$485,000	45,833 Direct	-9.84%	Disposed	-79.7% (price as of 2026-08-21)
June 6, 2025	SFB	S	5,000	$96.39	$481,950	50,833 Direct	-8.96%	Disposed	-79.6% (price as of 2026-08-21)
June 5, 2025	SFB	M	1,914	—	—	1,875 Direct	-50.51%	Disposed	(price as of 2026-08-21)
June 5, 2025	SFB	M	1,914	—	—	55,833 Direct	+3.55%	Acquired	(price as of 2026-08-21)
June 4, 2025	SFB	A	1,875	$93.35	$175,031	3,789 Direct	+97.96%	Acquired	-78.9% (price as of 2026-08-21)
June 7, 2024	SFB	M	2,504	—	—	1,914 Direct	-56.68%	Disposed	(price as of 2026-08-21)
June 7, 2024	SFB	M	2,504	—	—	53,919 Direct	+4.87%	Acquired	(price as of 2026-08-21)
June 5, 2024	SFB	A	1,914	$78.37	$150,000	4,418 Direct	+76.44%	Acquired	-74.9% (price as of 2026-08-21)
June 13, 2023	SFB	M	2,641	—	—	2,504 Direct	-51.33%	Disposed	(price as of 2026-08-21)
June 13, 2023	SFB	M	2,641	—	—	51,415 Direct	+5.41%	Acquired	(price as of 2026-08-21)
June 7, 2023	SFB	A	2,504	$59.90	$149,990	5,146 Direct	+94.78%	Acquired	-67.1% (price as of 2026-08-21)
June 13, 2022	SFB	A	2,642	$56.78	$150,013	2,642 Direct	—	Acquired	-65.3% (price as of 2026-08-21)
June 13, 2022	SFB	A	1,761	$56.78	$99,990	1,761 Direct	—	Acquired	-65.3% (price as of 2026-08-21)
May 31, 2022	SFB	M	1,389	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 31, 2022	SFB	M	1,389	—	—	48,774 Direct	+2.93%	Acquired	(price as of 2026-08-21)
Jan. 7, 2022	SFB	M	5,625	—	—	1,386 Direct	-80.23%	Disposed	(price as of 2026-08-21)
Jan. 7, 2022	SFB	M	5,625	—	—	47,385 Direct	+13.47%	Acquired	(price as of 2026-08-21)
Oct. 13, 2021	SFB	A	1,389	$71.98	$99,980	7,011 Direct	+24.71%	Acquired	-72.7% (price as of 2026-08-21)
June 3, 2021	SFB	M	3,144	—	—	5,622 Direct	-35.87%	Disposed	(price as of 2026-08-21)
June 3, 2021	SFB	M	3,144	—	—	41,760 Direct	+8.14%	Acquired	(price as of 2026-08-21)
Jan. 12, 2021	SFB	M	5,625	—	—	8,766 Direct	-39.09%	Disposed	(price as of 2026-08-21)
Jan. 12, 2021	SFB	M	5,625	—	—	38,616 Direct	+17.05%	Acquired	(price as of 2026-08-21)
June 5, 2020	SFB	M	1,900	—	—	9,594 Direct	-16.53%	Disposed	(price as of 2026-08-21)
June 5, 2020	SFB	M	1,900	—	—	21,994 Direct	+9.46%	Acquired	(price as of 2026-08-21)
May 29, 2020	SFB	A	2,094	—	—	11,494 Direct	+22.28%	Acquired	(price as of 2026-08-21)
Jan. 2, 2020	SFB	M	3,750	—	—	9,400 Direct	-28.52%	Disposed	(price as of 2026-08-21)
Jan. 2, 2020	SFB	M	3,750	—	—	20,094 Direct	+22.94%	Acquired	(price as of 2026-08-21)
June 6, 2019	SFB	M	1,900	—	—	13,150 Direct	-12.62%	Disposed	(price as of 2026-08-21)
June 6, 2019	SFB	M	1,900	—	—	16,344 Direct	+13.15%	Acquired	(price as of 2026-08-21)
June 5, 2019	SFB	A	1,900	—	—	15,050 Direct	+14.45%	Acquired	(price as of 2026-08-21)
Jan. 2, 2019	SFB	M	3,750	—	—	13,150 Direct	-22.19%	Disposed	(price as of 2026-08-21)
Jan. 2, 2019	SFB	M	3,750	—	—	14,444 Direct	+35.07%	Acquired	(price as of 2026-08-21)
Nov. 7, 2018	SFB	P	5,000	$48.39	$241,950	10,694 Direct	+87.81%	Acquired	-59.3% (price as of 2026-08-21)
Sept. 25, 2018	SFB	A	1,900	—	—	16,900 Direct	+12.67%	Acquired	(price as of 2026-08-21)
Aug. 7, 2018	SFB	J	1,900	—	—	15,000 Direct	-11.24%	Disposed	(price as of 2026-08-21)
June 7, 2018	SFB	M	1,900	—	—	16,900 Direct	-10.11%	Disposed	(price as of 2026-08-21)
June 7, 2018	SFB	M	1,900	—	—	5,694 Direct	+50.08%	Acquired	(price as of 2026-08-21)
June 6, 2018	SFB	A	1,900	—	—	18,800 Direct	+11.24%	Acquired	(price as of 2026-08-21)
Dec. 29, 2017	SFB	M	938	—	—	16,900 Direct	-5.26%	Disposed	(price as of 2026-08-21)
Dec. 29, 2017	SFB	M	938	—	—	3,794 Direct	+32.84%	Acquired	(price as of 2026-08-21)
June 7, 2017	SFB	A	1,900	—	—	17,838 Direct	+11.92%	Acquired	(price as of 2026-08-21)
June 15, 2016	SFB	A	3,750	—	—	15,000 Direct	+33.33%	Acquired	(price as of 2026-08-21)
June 10, 2015	SFB	A	3,750	—	—	11,250 Direct	+50.00%	Acquired	(price as of 2026-08-21)
June 11, 2014	SFB	A	3,750	—	—	4,626 Direct	+428.08%	Acquired	(price as of 2026-08-21)
Jan. 24, 2014	SFB	M	0	—	—	3,750 Direct	0.00%	Disposed	(price as of 2026-08-21)
Jan. 24, 2014	SFB	F	0	$49.82	—	2,856 Direct	0.00%	Disposed	-60.5% (price as of 2026-08-21)
Jan. 24, 2014	SFB	M	0	—	—	2,856 Direct	0.00%	Acquired	(price as of 2026-08-21)
Jan. 24, 2014	SFB	M	2,874	—	—	876 Direct	-76.64%	Disposed	(price as of 2026-08-21)
Jan. 24, 2014	SFB	F	898	$49.82	$44,738	4,832 Direct	-15.67%	Disposed	-60.5% (price as of 2026-08-21)
Jan. 24, 2014	SFB	M	2,874	—	—	5,730 Direct	+100.63%	Acquired	(price as of 2026-08-21)
June 12, 2013	SFB	A	3,750	—	—	3,750 Direct	—	Acquired	(price as of 2026-08-21)
Aug. 26, 2009	SFD	A	1,500	—	—	5,140 Direct	+41.21%	Acquired	(price as of 2026-08-21)
Nov. 14, 2008	SFD	A	640	$6.93	$4,435	3,640 Direct	+21.33%	Acquired	220.5% (price as of 2026-08-21)
Aug. 27, 2008	SFD	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-21)
March 27, 2008	SFD	P	700	$25.92	$18,144	8,034 Direct	+9.54%	Acquired	-14.3% (price as of 2026-08-21)
March 27, 2008	SFD	P	2,700	$25.93	$70,011	7,334 Direct	+58.26%	Acquired	-14.3% (price as of 2026-08-21)
March 27, 2008	SFD	P	200	$25.95	$5,190	4,634 Direct	+4.51%	Acquired	-14.4% (price as of 2026-08-21)
March 27, 2008	SFD	P	400	$25.96	$10,384	4,434 Direct	+9.92%	Acquired	-14.4% (price as of 2026-08-21)
May 7, 2007	SFD	A	2,034	—	—	4,034 Direct	+101.70%	Acquired	(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 9, 2026	SFB	Phantom Stock Units	Common Stock (2,450)	$0.00	—	2,450	Acquired
June 4, 2026	SFB	Phantom Stock Units	Common Stock (2,812)	$0.00	—	2,812	Disposed
June 5, 2025	SFB	Phantom Stock Units	Common Stock (1,914)	$0.00	—	1,914	Disposed
June 4, 2025	SFB	Phantom Stock Units	Common Stock (1,875)	$0.00	—	1,875	Acquired
June 7, 2024	SFB	Phantom Stock Units	Common Stock (2,504)	$0.00	—	2,504	Disposed
June 5, 2024	SFB	Phantom Stock Units	Common Stock (1,914)	$0.00	—	1,914	Acquired
June 13, 2023	SFB	Phantom Stock Units	Common Stock (2,641)	$0.00	—	2,641	Disposed
June 7, 2023	SFB	Phantom Stock Units	Common Stock (2,504)	$0.00	—	2,504	Acquired
June 13, 2022	SFB	Phantom Stock Units	Common Stock (2,642)	$0.00	—	2,642	Acquired
June 13, 2022	SFB	Phantom Stock Units	Common Stock (1,761)	$0.00	—	1,761	Acquired
May 31, 2022	SFB	Phantom Stock Units	Common Stock (1,389)	$0.00	—	1,389	Disposed
Jan. 7, 2022	SFB	Phantom Stock Units	Common Stock (5,625)	$0.00	—	5,625	Disposed
Oct. 13, 2021	SFB	Phantom Stock Units	Common Stock (1,389)	$0.00	—	1,389	Acquired
June 3, 2021	SFB	Phantom Stock Units	Common Stock (3,144)	$0.00	—	3,144	Disposed
Jan. 12, 2021	SFB	Phantom Stock Units	Common Stock (5,625)	$0.00	—	5,625	Disposed
June 5, 2020	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Disposed
May 29, 2020	SFB	Phantom Stock Units	Common Stock (2,094)	$0.00	—	2,094	Acquired
Jan. 2, 2020	SFB	Phantom Stock Units	Common Stock (3,750)	$0.00	—	3,750	Disposed
June 6, 2019	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Disposed
June 5, 2019	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Acquired
Jan. 2, 2019	SFB	Phantom Stock Units	Common Stock (3,750)	$0.00	—	3,750	Disposed
Sept. 25, 2018	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Acquired
Aug. 7, 2018	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Disposed
June 7, 2018	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Disposed
June 6, 2018	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Acquired
Dec. 29, 2017	SFB	Phantom Stock Units	Common Stock (938)	$0.00	—	938	Disposed
June 7, 2017	SFB	Phantom Stock Units	Common Stock (1,900)	$0.00	—	1,900	Acquired
June 15, 2016	SFB	Phantom Stock Units	Common Stock (3,750)	$0.00	—	3,750	Acquired
June 10, 2015	SFB	Phantom Stock Units	Common Stock (3,750)	$0.00	—	3,750	Acquired
June 11, 2014	SFB	Phantom Stock Units	Common Stock (3,750)	$0.00	—	3,750	Acquired
Jan. 24, 2014	SFB	Phantom Stock Units	Common Stock (0)	$0.00	—	0	Disposed
Jan. 24, 2014	SFB	Phantom Stock Units	Common Stock (2,874)	$0.00	—	2,874	Disposed
June 12, 2013	SFB	Phantom Stock Units	Common Stock (3,750)	$0.00	—	3,750	Acquired
Aug. 26, 2009	SFD	Phantom Stock	common stock (1,500)	—	—	1,500	Acquired
Nov. 14, 2008	SFD	Phantom Stock	common stock (640)	—	—	640	Acquired
Aug. 27, 2008	SFD	Phantom Stock	common stock (3,000)	—	—	3,000	Acquired

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

Initial ownership (Form 3) 3 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Feb. 14, 2017	SFB	Phantom Stock Units→ Common Stock (938)	938	Direct
Feb. 22, 2013	SFB	Common Stock	2,856	Direct
May 9, 2007	SFD	Common Stock	2,000	Direct