Don W. Kassing

Insider

First SEC filing: Sept. 17, 2015 · Latest: Sept. 17, 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.

Insider at

PEN selling Jan. 2, 2025

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 13 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

13 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 14, 2025	PEN	A	744	—	—	1,409 Direct	+111.88%	Acquired	(price as of 2026-08-20)
Jan. 2, 2025	PEN	S 10b5-1	170	$238.84	$40,603	665 Direct	-20.36%	Disposed	36.8% (price as of 2026-08-20)
Oct. 1, 2024	PEN	S 10b5-1	170	$193.93	$32,968	835 Direct	-16.92%	Disposed	68.5% (price as of 2026-08-20)
July 1, 2024	PEN	S 10b5-1	170	$179.99	$30,598	1,005 Direct	-14.47%	Disposed	81.5% (price as of 2026-08-20)
April 1, 2024	PEN	S 10b5-1	170	$223.18	$37,941	1,175 Direct	-12.64%	Disposed	46.4% (price as of 2026-08-20)
March 1, 2024	PEN	S 10b5-1	778	$234.72	$182,612	1,345 Direct	-36.65%	Disposed	39.2% (price as of 2026-08-20)
Feb. 16, 2024	PEN	A	665	—	—	2,123 Direct	+45.61%	Acquired	(price as of 2026-08-20)
Sept. 8, 2023	PEN	S 10b5-1	444	$288.66	$128,165	1,458 Direct	-23.34%	Disposed	13.2% (price as of 2026-08-20)
Aug. 8, 2023	PEN	S 10b5-1	323	$251.00	$81,073	1,902 Direct	-14.52%	Disposed	30.2% (price as of 2026-08-20)
Feb. 17, 2023	PEN	A	680	—	—	2,225 Direct	+44.01%	Acquired	(price as of 2026-08-20)
Jan. 27, 2023	PEN	S 10b5-1	693	$243.54	$168,773	1,545 Direct	-30.97%	Disposed	34.1% (price as of 2026-08-20)
Feb. 18, 2022	PEN	A	710	—	—	2,238 Direct	+46.47%	Acquired	(price as of 2026-08-20)
Feb. 19, 2021	PEN	A	535	—	—	1,528 Direct	+53.88%	Acquired	(price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	140	$206.88	$28,963	1,565 Direct	-8.21%	Disposed	57.9% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	128	$207.71	$26,587	1,437 Direct	-8.18%	Disposed	57.3% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	89	$208.74	$18,578	1,348 Direct	-6.19%	Disposed	56.5% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	121	$209.80	$25,386	1,227 Direct	-8.98%	Disposed	55.7% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	46	$210.76	$9,695	1,181 Direct	-3.75%	Disposed	55.0% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	24	$211.76	$5,082	1,157 Direct	-2.03%	Disposed	54.3% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	50	$212.82	$10,641	1,107 Direct	-4.32%	Disposed	53.5% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	62	$213.88	$13,261	1,045 Direct	-5.60%	Disposed	52.7% (price as of 2026-08-20)
Oct. 9, 2020	PEN	S 10b5-1	52	$214.50	$11,154	993 Direct	-4.98%	Disposed	52.3% (price as of 2026-08-20)
Feb. 24, 2020	PEN	S 10b5-1	126	$185.79	$23,410	1,883 Direct	-6.27%	Disposed	75.8% (price as of 2026-08-20)
Feb. 24, 2020	PEN	S 10b5-1	178	$186.66	$33,225	1,705 Direct	-9.45%	Disposed	75.0% (price as of 2026-08-20)
Feb. 11, 2020	PEN	A	756	—	—	2,009 Direct	+60.34%	Acquired	(price as of 2026-08-20)
Oct. 14, 2019	PEN	S 10b5-1	200	$142.96	$28,592	2,326 Direct	-7.92%	Disposed	128.5% (price as of 2026-08-20)
Oct. 14, 2019	PEN	S 10b5-1	800	$144.12	$115,296	1,526 Direct	-34.39%	Disposed	126.7% (price as of 2026-08-20)
Oct. 14, 2019	PEN	S 10b5-1	269	$144.84	$38,962	1,257 Direct	-17.63%	Disposed	125.5% (price as of 2026-08-20)
Oct. 14, 2019	PEN	S 10b5-1	4	$145.59	$582	1,253 Direct	-0.32%	Disposed	124.4% (price as of 2026-08-20)
Feb. 8, 2019	PEN	A	949	—	—	2,526 Direct	+60.18%	Acquired	(price as of 2026-08-20)
Jan. 29, 2019	PEN	S 10b5-1	176	$135.59	$23,864	2,487 Direct	-6.61%	Disposed	140.9% (price as of 2026-08-20)
Jan. 29, 2019	PEN	S 10b5-1	810	$136.85	$110,848	1,677 Direct	-32.57%	Disposed	138.7% (price as of 2026-08-20)
Jan. 29, 2019	PEN	S 10b5-1	100	$137.34	$13,734	1,577 Direct	-5.96%	Disposed	137.9% (price as of 2026-08-20)
Feb. 16, 2018	PEN	A	1,215	—	—	2,663 Direct	+83.91%	Acquired	(price as of 2026-08-20)
Jan. 29, 2018	PEN	S 10b5-1	800	$100.57	$80,456	2,648 Direct	-23.20%	Disposed	224.8% (price as of 2026-08-20)
Jan. 29, 2018	PEN	S 10b5-1	1,200	$101.18	$121,416	1,448 Direct	-45.32%	Disposed	222.9% (price as of 2026-08-20)
April 17, 2017	PEN	A	1,448	—	—	3,448 Direct	+72.40%	Acquired	(price as of 2026-08-20)
Jan. 26, 2017	PEN	S 10b5-1	800	$72.80	$58,240	8,700 Indirect	-8.42%	Disposed	348.7% (price as of 2026-08-20)
Jan. 26, 2017	PEN	S 10b5-1	100	$74.05	$7,405	8,600 Indirect	-1.15%	Disposed	341.2% (price as of 2026-08-20)
Jan. 26, 2017	PEN	S 10b5-1	100	$75.00	$7,500	8,500 Indirect	-1.16%	Disposed	335.6% (price as of 2026-08-20)
Jan. 25, 2017	PEN	S 10b5-1	1,334	$74.95	$99,983	2,666 Direct	-33.35%	Disposed	335.9% (price as of 2026-08-20)
Jan. 25, 2017	PEN	S 10b5-1	666	$75.65	$50,383	2,000 Direct	-24.98%	Disposed	331.8% (price as of 2026-08-20)
Aug. 12, 2016	PEN	S	1,436	$72.99	$104,814	11,564 Indirect	-11.05%	Disposed	347.6% (price as of 2026-08-20)
Aug. 12, 2016	PEN	S	2,064	$74.23	$153,211	9,500 Indirect	-17.85%	Disposed	340.1% (price as of 2026-08-20)
May 19, 2016	PEN	S	3,000	$48.63	$145,890	13,000 Indirect	-18.75%	Disposed	571.8% (price as of 2026-08-20)
March 4, 2016	PEN	A	2,000	—	—	4,000 Direct	+100.00%	Acquired	(price as of 2026-08-20)
Sept. 23, 2015	PEN	A	2,000	—	—	2,000 Direct	—	Acquired	(price as of 2026-08-20)
April 23, 2015	PEN	M	8,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 23, 2015	PEN	M	8,000	$2.81	$22,480	16,000 Indirect	+100.00%	Acquired	11525.6% (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
April 23, 2015	PEN	Stock Option (right to buy) [F1]	Common Stock (8,000)	$2.81	Dec. 3, 2018	8,000	Disposed

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Sept. 17, 2015	PEN	Common Stock	16,000	Indirect