Robert J Park

Insider

First SEC filing: Oct. 17, 2024 · Latest: Oct. 17, 2024

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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.

Insider at

DLB selling May 12, 2026

Insider transactions

0 buys (P) 2 sells (S) Net: $-277,440 + 24 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

24 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 12, 2026	DLB	S	391	$57.35	$22,424	81,490 Direct	-0.48%	Disposed	10.2% (price as of 2026-08-20)
May 12, 2026	DLB	S	4,504	$56.62	$255,016	81,881 Direct	-5.21%	Disposed	11.6% (price as of 2026-08-20)
Dec. 16, 2025	DLB	F	2,285	$66.62	$152,227	86,385 Direct	-2.58%	Disposed	-5.1% (price as of 2026-08-20)
Dec. 15, 2025	DLB	M	5,687	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 15, 2025	DLB	A	51,460	—	—	51,460 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2025	DLB	A	11,685	—	—	11,685 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2025	DLB	F	6,473	$67.54	$437,186	88,670 Direct	-6.80%	Disposed	-6.4% (price as of 2026-08-20)
Dec. 15, 2025	DLB	M	5,687	—	—	95,143 Direct	+6.36%	Acquired	(price as of 2026-08-20)
Dec. 15, 2025	DLB	A	23,371	—	—	89,456 Direct	+35.37%	Acquired	(price as of 2026-08-20)
Dec. 16, 2024	DLB	A	31,890	—	—	31,890 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 16, 2024	DLB	A	9,070	—	—	9,070 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 16, 2024	DLB	F	3,725	$79.18	$294,946	69,287 Direct	-5.10%	Disposed	-20.2% (price as of 2026-08-20)
Dec. 16, 2024	DLB	A	18,141	—	—	73,012 Direct	+33.06%	Acquired	(price as of 2026-08-20)
Oct. 15, 2024	DLB	F	3,552	$69.11	$245,479	66,085 Direct	-5.10%	Disposed	-8.5% (price as of 2026-08-20)
Oct. 15, 2024	DLB	F	3,552	$74.36	$264,127	54,871 Direct	-6.08%	Disposed	-15.0% (price as of 2026-08-20)
Dec. 15, 2023	DLB	A	26,283	—	—	26,283 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2023	DLB	A	7,497	—	—	7,497 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2023	DLB	F	1,887	$88.60	$167,188	58,138 Direct	-3.14%	Disposed	-28.7% (price as of 2026-08-20)
Dec. 15, 2023	DLB	A	14,995	—	—	60,025 Direct	+33.30%	Acquired	(price as of 2026-08-20)
Oct. 16, 2023	DLB	F	3,485	$80.44	$280,333	44,937 Direct	-7.20%	Disposed	-21.4% (price as of 2026-08-20)
Dec. 15, 2022	DLB	A	31,677	—	—	31,677 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2022	DLB	A	8,797	—	—	8,797 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2022	DLB	A	17,595	—	—	48,016 Direct	+57.84%	Acquired	(price as of 2026-08-20)
Oct. 17, 2022	DLB	F	3,485	$64.28	$224,016	30,224 Direct	-10.34%	Disposed	-1.7% (price as of 2026-08-20)
Oct. 15, 2021	DLB	A	49,886	—	—	49,886 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 15, 2021	DLB	A	33,523	—	—	33,523 Direct	—	Acquired	(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
Dec. 15, 2025	DLB	Performance-Based Restricted Stock Unit	Class A Common Stock (5,687)	—	—	5,687	Disposed
Dec. 15, 2025	DLB	Employee Stock Option (Right to Buy)	Class A Common Stock (51,460)	$66.62	Dec. 15, 2035	51,460	Acquired
Dec. 15, 2025	DLB	Performance-Based Restricted Stock Unit	Class A Common Stock (11,685)	—	—	11,685	Acquired
Dec. 16, 2024	DLB	Employee Stock Option (Right to Buy)	Class A Common Stock (31,890)	$77.91	Dec. 16, 2034	31,890	Acquired
Dec. 16, 2024	DLB	Performance-Based Restricted Stock Unit	Class A Common Stock (9,070)	—	—	9,070	Acquired
Dec. 15, 2023	DLB	Employee Stock Option (Right to Buy)	Class A Common Stock (26,283)	$87.49	Dec. 15, 2033	26,283	Acquired
Dec. 15, 2023	DLB	Performance-Based Restricted Stock Unit	Class A Common Stock (7,497)	—	—	7,497	Acquired
Dec. 15, 2022	DLB	Employee Stock Option (Right to Buy)	Class A Common Stock (31,677)	$71.07	Dec. 15, 2032	31,677	Acquired
Dec. 15, 2022	DLB	Performance-Based Restricted Stock Unit	Class A Common Stock (8,797)	—	—	8,797	Acquired
Oct. 15, 2021	DLB	Employee Stock Option (right to buy)	Class A Common Stock (49,886)	$91.73	Oct. 15, 2031	49,886	Acquired

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