MARTINGALE ASSET MANAGEMENT L P

Position in DLB — Dolby Laboratories, Inc.

CIK 936944 BOSTON, MA

Position in DLB

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$15,539,684

-$558,727 QoQ

Shares Held

258,736

+3.2% QoQ

Ownership

0.274%

of shares outstanding

% of Portfolio

0.40%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2021

7 quarters on record

Voting authority Sole 79.20660441531136.ToString("F0")% Shared 0.ToString("F0")% None 20.79339558468864.ToString("F0")%

Industrials · as of Mar 31, 2026

MARTINGALE ASSET MANAGEMENT L P holds $17,119,667 across 3 Specialty Business Services names. DLB ranks #1 (90.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	DLB	Dolby Laboratories, Inc. This page	258,736	$15,539,684
2	QUAD	Quad/Graphics, Inc.	141,857	$937,674
3	UNF	Unifirst Corp	2,553	$642,309

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$15,539,684	258,736	+3.2%	Shares	Sole	2026-05-13
2025-12-31	$16,098,411	250,676	+2.7%	Shares	Sole	2026-02-13
2025-09-30	$17,670,075	244,163	+0.4%	Shares	Sole	2025-11-13
2025-06-30	$18,059,882	243,198	+27.1%	Shares	Sole	2025-08-11
2025-03-31	$15,365,792	191,331	+478.7%	Shares	Sole	2025-05-14
2022-03-31	$2,586,187	33,063	-48.4%	Shares	Sole	2022-05-12
2021-12-31	$6,096,269	64,023	—	Shares	Sole	2022-02-11
No filing history on record for this holder in this stock.