Mark J Borseth

Insider

First SEC filing: Feb. 13, 2004 · Latest: Feb. 13, 2004

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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 + 18 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

18 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 3, 2022	SWIM	A	84,992	—	—	84,992 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 11, 2022	SWIM	D	77,599	$18.67	$1,448,773	442,378 Direct	-14.92%	Disposed	-62.6% (price as of 2026-08-20)
April 27, 2021	SWIM	P	10,000	$19.00	$190,000	328,684 Direct	+3.14%	Acquired	-63.3% (price as of 2026-08-20)
April 22, 2021	SWIM	A	72,738	—	—	72,738 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 12, 2004	MMM	A	941	—	—	941 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 12, 2004	MMM	A	1,009	—	—	1,009 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 12, 2004	MMM	M	1,428	—	—	1,672 Direct	-46.06%	Disposed	(price as of 2026-08-20)
Feb. 12, 2004	MMM	M	1,334	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 12, 2004	MMM	F	229	$81.14	$18,581	2,681 Direct	-7.87%	Disposed	165.8% (price as of 2026-08-20)
Feb. 12, 2004	MMM	F	712	$81.14	$57,772	2,910 Direct	-19.66%	Disposed	165.8% (price as of 2026-08-20)
Feb. 12, 2004	MMM	M	1,334	$43.35	$57,829	3,622 Direct	+58.30%	Acquired	397.6% (price as of 2026-08-20)
Feb. 12, 2004	MMM	F	203	$81.14	$16,471	2,288 Direct	-8.15%	Disposed	165.8% (price as of 2026-08-20)
Feb. 12, 2004	MMM	F	806	$81.14	$65,399	2,491 Direct	-24.45%	Disposed	165.8% (price as of 2026-08-20)
Feb. 12, 2004	MMM	M	1,428	$45.85	$65,474	3,297 Direct	+76.40%	Acquired	370.5% (price as of 2026-08-20)
Aug. 7, 2003	MMM	M	820	$86.70	$71,094	1,501 Direct	+120.41%	Acquired	397.6% (price as of 2026-08-20)
Aug. 7, 2003	MMM	A	613	$138.40	$84,839	613 Direct	—	Acquired	211.7% (price as of 2026-08-20)
Aug. 7, 2003	MMM	M	820	$138.40	$113,488	667 Direct	-55.14%	Disposed	211.7% (price as of 2026-08-20)
Aug. 7, 2003	MMM	F	100	$138.40	$13,840	888 Direct	-10.12%	Disposed	211.7% (price as of 2026-08-20)
Aug. 7, 2003	MMM	F	513	$138.40	$70,999	988 Direct	-34.18%	Disposed	211.7% (price as of 2026-08-20)

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
March 3, 2022	SWIM	Stock Option (right to buy) [F2]	Common stock (84,992)	$15.69	March 3, 2032	84,992	Acquired
April 22, 2021	SWIM	Stock option (right to buy) [F1]	Common stock (72,738)	$19.00	April 22, 2031	72,738	Acquired
Feb. 12, 2004	MMM	Non-Qualified Stock Option (right to buy)	Common Stock (941)	$81.15	May 7, 2010	941	Acquired
Feb. 12, 2004	MMM	Non-Qualified Stock Option (right to buy)	Common Stock (1,009)	$81.15	May 11, 2007	1,009	Acquired
Feb. 12, 2004	MMM	Non-Qualified Stock Option (right to buy)	Common Stock (1,428)	$45.85	May 13, 2007	1,428	Disposed
Feb. 12, 2004	MMM	Non-Qualified Stock Option (right to buy)	Common Stock (1,334)	$43.35	May 9, 2010	1,334	Disposed
Aug. 7, 2003	MMM	Non-Qualified Stock Option (right to buy)	Common Stock (613)	$138.40	May 7, 2010	613	Acquired
Aug. 7, 2003	MMM	Non-Qualified Stock Option (right to buy)	Common Stock (820)	$86.70	May 9, 2010	820	Disposed

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

Initial ownership (Form 3) 4 holdings

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

Date	Ticker	Security	Shares	Ownership
Feb. 22, 2023	SWIM	Common Stock, par value $0.0001 per share	645,590	Direct
Feb. 22, 2023	SWIM	Stock Option (right to buy) [F1]→ Common Stock (18,184)	18,184	Direct
April 22, 2021	SWIM	Common Stock, par value $0.0001 per share [F1]	318,684	Direct
April 22, 2021	SWIM	Common Stock, par value $0.0001 per share [F2,F3]	830,929	Direct