Jeffery Darby

Insider

First SEC filing: May 11, 2012 · Latest: Jan. 29, 2014

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

DORM selling March 3, 2023

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 78 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

78 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 6, 2023	DORM	F	59	$84.88	$5,008	23,995 Direct	-0.25%	Disposed	56.4% (price as of 2026-08-20)
March 3, 2023	DORM	M	943	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 3, 2023	DORM	S	27	$92.00	$2,484	24,054 Direct	-0.11%	Disposed	44.3% (price as of 2026-08-20)
March 3, 2023	DORM	S	726	$91.01	$66,073	24,081 Direct	-2.93%	Disposed	45.8% (price as of 2026-08-20)
March 3, 2023	DORM	M	943	$72.55	$68,415	24,807 Direct	+3.95%	Acquired	82.9% (price as of 2026-08-20)
March 2, 2023	DORM	A	2,382	—	—	2,382 Direct	—	Acquired	(price as of 2026-08-20)
March 2, 2023	DORM	A	1,095	—	—	23,864 Direct	+4.81%	Acquired	(price as of 2026-08-20)
March 2, 2023	DORM	A	939	—	—	22,769 Direct	+4.30%	Acquired	(price as of 2026-08-20)
March 2, 2023	DORM	F	322	$91.28	$29,392	21,830 Direct	-1.45%	Disposed	45.4% (price as of 2026-08-20)
Feb. 22, 2023	DORM	F	1,275	$93.38	$119,060	22,152 Direct	-5.44%	Disposed	42.1% (price as of 2026-08-20)
Feb. 22, 2023	DORM	A	2,816	—	—	23,427 Direct	+13.66%	Acquired	(price as of 2026-08-20)
Aug. 7, 2022	DORM	F	435	$98.09	$42,669	20,611 Direct	-2.07%	Disposed	35.3% (price as of 2026-08-20)
March 6, 2022	DORM	F	438	$96.52	$42,276	21,046 Direct	-2.04%	Disposed	37.5% (price as of 2026-08-20)
March 6, 2022	DORM	A	870	—	—	21,484 Direct	+4.22%	Acquired	(price as of 2026-08-20)
March 2, 2022	DORM	F	247	$96.36	$23,801	17,336 Direct	-1.40%	Disposed	37.7% (price as of 2026-08-20)
March 2, 2022	DORM	A	684	—	—	18,020 Direct	+3.95%	Acquired	(price as of 2026-08-20)
March 2, 2022	DORM	A	2,594	—	—	20,614 Direct	+14.40%	Acquired	(price as of 2026-08-20)
March 2, 2022	DORM	A	2,040	—	—	2,040 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 1, 2021	DORM	M	898	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 1, 2021	DORM	M	2,425	—	—	943 Direct	-72.00%	Disposed	(price as of 2026-08-20)
Nov. 1, 2021	DORM	M	1,474	—	—	4,422 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Nov. 1, 2021	DORM	S	4,797	$105.53	$506,227	17,583 Direct	-21.43%	Disposed	25.8% (price as of 2026-08-20)
Nov. 1, 2021	DORM	S	2,500	$105.73	$264,325	22,380 Direct	-10.05%	Disposed	25.5% (price as of 2026-08-20)
Nov. 1, 2021	DORM	M	898	$78.64	$70,619	24,880 Direct	+3.74%	Acquired	68.8% (price as of 2026-08-20)
Nov. 1, 2021	DORM	M	2,425	$72.55	$175,934	23,982 Direct	+11.25%	Acquired	82.9% (price as of 2026-08-20)
Nov. 1, 2021	DORM	M	1,474	$61.68	$90,916	21,557 Direct	+7.34%	Acquired	115.2% (price as of 2026-08-20)
Aug. 7, 2021	DORM	F	435	$99.81	$43,417	20,083 Direct	-2.12%	Disposed	33.0% (price as of 2026-08-20)
April 29, 2021	DORM	M	2,692	—	—	898 Direct	-74.99%	Disposed	(price as of 2026-08-20)
April 29, 2021	DORM	M	404	—	—	3,368 Direct	-10.71%	Disposed	(price as of 2026-08-20)
April 29, 2021	DORM	M	2,692	$78.64	$211,699	20,518 Direct	+15.10%	Acquired	68.8% (price as of 2026-08-20)
April 29, 2021	DORM	M	404	$72.55	$29,310	17,826 Direct	+2.32%	Acquired	82.9% (price as of 2026-08-20)
March 6, 2021	DORM	F	59	$106.59	$6,289	17,422 Direct	-0.34%	Disposed	24.5% (price as of 2026-08-20)
March 2, 2021	DORM	F	179	$101.45	$18,160	16,857 Direct	-1.05%	Disposed	30.8% (price as of 2026-08-20)
March 2, 2021	DORM	A	624	—	—	17,481 Direct	+3.70%	Acquired	(price as of 2026-08-20)
March 2, 2021	DORM	A	1,998	—	—	1,998 Direct	—	Acquired	(price as of 2026-08-20)
March 1, 2021	DORM	S	4,000	$101.99	$407,960	17,036 Direct	-19.02%	Disposed	30.1% (price as of 2026-08-20)
Jan. 27, 2021	DORM	M	1,273	$41.59	$52,944	21,036 Direct	+6.44%	Acquired	219.1% (price as of 2026-08-20)
Jan. 27, 2021	DORM	M	1,273	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 18, 2020	DORM	M	1,273	—	—	1,273 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Dec. 18, 2020	DORM	M	1,273	$41.59	$52,944	19,763 Direct	+6.88%	Acquired	219.1% (price as of 2026-08-20)
Oct. 20, 2020	DORM	M	2,546	—	—	2,546 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Oct. 20, 2020	DORM	M	2,546	$41.59	$105,888	18,490 Direct	+15.97%	Acquired	219.1% (price as of 2026-08-20)
Aug. 7, 2020	DORM	F	285	$85.97	$24,501	15,944 Direct	-1.76%	Disposed	54.4% (price as of 2026-08-20)
July 30, 2020	DORM	S 10b5-1	1,624	$83.31	$135,295	16,229 Direct	-9.10%	Disposed	59.3% (price as of 2026-08-20)
June 5, 2020	DORM	S	1,376	$76.94	$105,869	17,853 Direct	-7.16%	Disposed	72.5% (price as of 2026-08-20)
March 6, 2020	DORM	F	46	$60.16	$2,767	19,229 Direct	-0.24%	Disposed	120.6% (price as of 2026-08-20)
March 2, 2020	DORM	A	5,896	—	—	5,896 Direct	—	Acquired	(price as of 2026-08-20)
March 2, 2020	DORM	A	4,709	—	—	4,709 Direct	—	Acquired	(price as of 2026-08-20)
March 2, 2020	DORM	A	1,641	—	—	19,275 Direct	+9.31%	Acquired	(price as of 2026-08-20)
Aug. 7, 2019	DORM	F	285	$70.58	$20,115	17,634 Direct	-1.59%	Disposed	88.1% (price as of 2026-08-20)
March 6, 2019	DORM	A	540	—	—	17,919 Direct	+3.11%	Acquired	(price as of 2026-08-20)
March 6, 2019	DORM	A	1,871	—	—	1,871 Direct	—	Acquired	(price as of 2026-08-20)
March 6, 2019	DORM	F	383	$82.03	$31,417	17,379 Direct	-2.16%	Disposed	61.8% (price as of 2026-08-20)
March 6, 2019	DORM	A	1,389	—	—	17,762 Direct	+8.48%	Acquired	(price as of 2026-08-20)
Jan. 24, 2019	DORM	M	4,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 24, 2019	DORM	M	4,000	$7.74	$30,960	16,373 Direct	+32.33%	Acquired	1614.8% (price as of 2026-08-20)
Aug. 7, 2018	DORM	F	285	$74.55	$21,247	12,354 Direct	-2.25%	Disposed	78.0% (price as of 2026-08-20)
Aug. 7, 2018	DORM	S	1,367	$76.13	$104,070	12,639 Direct	-9.76%	Disposed	74.3% (price as of 2026-08-20)
March 9, 2018	DORM	S	100	$72.80	$7,280	14,066 Direct	-0.71%	Disposed	82.3% (price as of 2026-08-20)
March 7, 2018	DORM	A	3,772	—	—	3,772 Direct	—	Acquired	(price as of 2026-08-20)
March 7, 2018	DORM	F	243	$72.55	$17,630	14,106 Direct	-1.69%	Disposed	82.9% (price as of 2026-08-20)
March 7, 2018	DORM	A	861	—	—	14,349 Direct	+6.38%	Acquired	(price as of 2026-08-20)
March 7, 2018	DORM	S	1,100	$72.77	$80,047	13,488 Direct	-7.54%	Disposed	82.4% (price as of 2026-08-20)
Feb. 12, 2018	DORM	F	464	$71.36	$33,111	14,588 Direct	-3.08%	Disposed	86.0% (price as of 2026-08-20)
Aug. 7, 2017	DORM	A	5,000	—	—	15,052 Direct	+49.74%	Acquired	(price as of 2026-08-20)
March 15, 2017	DORM	S	2,000	$80.00	$160,000	10,052 Direct	-16.59%	Disposed	65.9% (price as of 2026-08-20)
Feb. 27, 2017	DORM	A	3,590	—	—	3,590 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 27, 2017	DORM	F	253	$78.64	$19,896	12,052 Direct	-2.06%	Disposed	68.8% (price as of 2026-08-20)
Feb. 27, 2017	DORM	A	821	—	—	12,305 Direct	+7.15%	Acquired	(price as of 2026-08-20)
Feb. 12, 2017	DORM	F	487	$69.95	$34,066	11,503 Direct	-4.06%	Disposed	89.7% (price as of 2026-08-20)
Feb. 12, 2017	DORM	F	506	$69.95	$35,395	11,484 Direct	-4.22%	Disposed	89.7% (price as of 2026-08-20)
Sept. 2, 2016	DORM	S	490	$64.00	$31,360	11,990 Direct	-3.93%	Disposed	107.4% (price as of 2026-08-20)
Aug. 5, 2016	DORM	D	100	$63.73	$6,373	13,890 Direct	-0.71%	Disposed	108.3% (price as of 2026-08-20)
Aug. 5, 2016	DORM	D	1,410	$64.48	$90,917	12,480 Direct	-10.15%	Disposed	105.8% (price as of 2026-08-20)
April 28, 2016	DORM	F	630	$53.33	$33,598	13,990 Direct	-4.31%	Disposed	148.9% (price as of 2026-08-20)
Feb. 12, 2016	DORM	A	5,092	—	—	5,092 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 12, 2016	DORM	A	2,750	—	—	14,620 Direct	+23.17%	Acquired	(price as of 2026-08-20)
Aug. 3, 2015	DORM	D	2,500	$52.96	$132,400	11,870 Direct	-17.40%	Disposed	150.6% (price as of 2026-08-20)
April 28, 2015	DORM	F	630	$48.09	$30,297	14,370 Direct	-4.20%	Disposed	176.0% (price as of 2026-08-20)
Dec. 3, 2014	DORM	S	1,771	$50.55	$89,524	0 Indirect	-100.00%	Disposed	162.6% (price as of 2026-08-20)
Dec. 3, 2014	DORM	S	1,601	$51.13	$81,859	15,000 Direct	-9.64%	Disposed	159.6% (price as of 2026-08-20)
Dec. 3, 2014	DORM	S	3,399	$50.35	$171,140	16,601 Direct	-16.99%	Disposed	163.6% (price as of 2026-08-20)
Dec. 2, 2014	DORM	S	5,370	$48.16	$258,619	20,000 Direct	-21.17%	Disposed	175.6% (price as of 2026-08-20)
Sept. 2, 2014	DORM	S	1,000	$44.98	$44,980	25,370 Direct	-3.79%	Disposed	195.1% (price as of 2026-08-20)
April 28, 2014	DORM	F	630	$56.23	$35,425	26,370 Direct	-2.33%	Disposed	136.0% (price as of 2026-08-20)
March 12, 2014	DORM	M	6,000	—	—	4,000 Direct	-60.00%	Disposed	(price as of 2026-08-20)
March 12, 2014	DORM	M	6,000	$7.74	$46,440	27,000 Direct	+28.57%	Acquired	1614.8% (price as of 2026-08-20)
March 3, 2014	DORM	S	1,781	$57.06	$101,624	1,781 Indirect	-50.00%	Disposed	132.6% (price as of 2026-08-20)
Jan. 16, 2014	DORM	M	5,000	—	—	10,000 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Jan. 16, 2014	DORM	M	5,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 16, 2014	DORM	M	5,000	$7.74	$38,700	16,000 Direct	+45.45%	Acquired	1614.8% (price as of 2026-08-20)
Jan. 16, 2014	DORM	M	5,000	$6.90	$34,500	11,000 Direct	+83.33%	Acquired	1823.6% (price as of 2026-08-20)
May 28, 2013	DORM	S	1,370	$46.00	$63,020	6,000 Direct	-18.59%	Disposed	188.5% (price as of 2026-08-20)
May 7, 2013	DORM	S	1,188	$40.97	$48,672	3,564 Indirect	-25.00%	Disposed	224.0% (price as of 2026-08-20)
April 28, 2013	DORM	F	630	$35.81	$22,560	7,370 Direct	-7.88%	Disposed	270.6% (price as of 2026-08-20)
March 15, 2013	DORM	S	5,000	$37.98	$189,900	8,000 Direct	-38.46%	Disposed	249.5% (price as of 2026-08-20)
March 11, 2013	DORM	M	5,000	—	—	5,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
March 11, 2013	DORM	M	5,000	$6.90	$34,500	13,000 Direct	+62.50%	Acquired	1823.6% (price as of 2026-08-20)
Aug. 3, 2012	DORM	S	11,388	$28.90	$329,113	8,000 Direct	-58.74%	Disposed	359.3% (price as of 2026-08-20)
June 8, 2012	DORM	M	5,000	—	—	5,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)

Showing latest 100 of 102 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
March 3, 2023	DORM	Employee Stock Option (right to buy)	Common Stock (943)	$72.55	March 7, 2023	943	Disposed
March 2, 2023	DORM	Employee Stock Option (right to buy)	Common Stock (2,382)	$91.28	March 2, 2031	2,382	Acquired
March 2, 2022	DORM	Employee Stock Option (right to buy)	Common Stock (2,040)	$96.36	March 2, 2030	2,040	Acquired
Nov. 1, 2021	DORM	Employee Stock Option (right to buy)	Common Stock (898)	$78.64	Feb. 27, 2022	898	Disposed
Nov. 1, 2021	DORM	Employee Stock Option (right to buy)	Common Stock (2,425)	$72.55	March 7, 2023	2,425	Disposed
Nov. 1, 2021	DORM	Employee Stock Option (right to buy)	Common Stock (1,474)	$61.68	March 2, 2028	1,474	Disposed
April 29, 2021	DORM	Employee Stock Option (right to buy)	Common Stock (2,692)	$78.64	Feb. 27, 2022	2,692	Disposed
April 29, 2021	DORM	Employee Stock Option (right to buy)	Common Stock (404)	$72.55	March 7, 2023	404	Disposed
March 2, 2021	DORM	Employee Stock Option (right to buy)	Common Stock (1,998)	$101.45	March 2, 2029	1,998	Acquired
Jan. 27, 2021	DORM	Employee Stock Option (right to buy)	Common Stock (1,273)	$41.59	Feb. 12, 2021	1,273	Disposed
Dec. 18, 2020	DORM	Employee Stock Option (right to buy)	Common Stock (1,273)	$41.59	Feb. 12, 2021	1,273	Disposed
Oct. 20, 2020	DORM	Employee Stock Option (right to buy)	Common Stock (2,546)	$41.59	Feb. 12, 2021	2,546	Disposed
March 2, 2020	DORM	Employee Stock Option (right to buy)	Common Stock (5,896)	$61.68	March 2, 2028	5,896	Acquired
March 2, 2020	DORM	Employee Stock Option (right to buy)	Common Stock (4,709)	$61.68	March 2, 2028	4,709	Acquired
March 6, 2019	DORM	Employee Stock Option (right to buy)	Common Stock (1,871)	$82.03	March 6, 2027	1,871	Acquired
Jan. 24, 2019	DORM	Employee Stock Option (right to buy)	Common Stock (4,000)	$7.74	Dec. 10, 2019	4,000	Disposed
March 7, 2018	DORM	Common Stock	Common Stock (3,772)	$72.55	March 7, 2023	3,772	Acquired
Feb. 27, 2017	DORM	Employee Stock Option (Right to Buy)	Common Stock (3,590)	$78.64	Feb. 27, 2022	3,590	Acquired
Feb. 12, 2016	DORM	Employee Stock Option (Right to Buy)	Common Stock (5,092)	$41.59	Feb. 12, 2021	5,092	Acquired
March 12, 2014	DORM	Employee Stock Option (right to buy)	Common Stock (6,000)	$7.74	Dec. 10, 2019	6,000	Disposed
Jan. 16, 2014	DORM	Employee Stock Option (right to buy)	Common Stock (5,000)	$7.74	Dec. 10, 2019	5,000	Disposed
Jan. 16, 2014	DORM	Employee Stock Option (right to buy)	Common Stock (5,000)	$6.90	Dec. 14, 2017	5,000	Disposed
March 11, 2013	DORM	Employee Stock Option (right to buy)	Common Stock (5,000)	$6.90	Dec. 14, 2017	5,000	Disposed
June 8, 2012	DORM	Employee Stock Option (Right to Buy)	Common Stock (5,000)	$13.79	Dec. 14, 2017	5,000	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
May 11, 2012	DORM	Common Stock	5,000	Direct
May 11, 2012	DORM	Common Stock	2,454	Indirect
May 11, 2012	DORM	Employee Stock Option (Right to Buy)→ Common Stock (10,000)	10,000	Direct
May 11, 2012	DORM	Employee Stock Option (Right to Buy)→ Common Stock (10,000)	10,000	Direct