David E. Dolby
CIK 1511370 · View on SEC EDGAR ↗
Activist
First SEC filing: Feb. 3, 2025 · Latest: Feb. 3, 2025
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 31 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 3, 2026 | DLB | A | 3,908 | — | — | 92,718 Direct | +4.40% | Acquired | (price as of 2026-08-18) |
| Feb. 4, 2025 | DLB | A | 3,140 | — | — | 88,810 Direct | +3.67% | Acquired | (price as of 2026-08-18) |
| Feb. 6, 2024 | DLB | A | 2,952 | — | — | 85,670 Direct | +3.57% | Acquired | (price as of 2026-08-18) |
| Feb. 7, 2023 | DLB | A | 3,296 | — | — | 82,718 Direct | +4.15% | Acquired | (price as of 2026-08-18) |
| Feb. 8, 2022 | DLB | A | 2,783 | — | — | 79,422 Direct | +3.63% | Acquired | (price as of 2026-08-18) |
| Feb. 2, 2021 | DLB | A | 2,661 | — | — | 76,639 Direct | +3.60% | Acquired | (price as of 2026-08-18) |
| Feb. 4, 2020 | DLB | A | 3,627 | — | — | 73,978 Direct | +5.16% | Acquired | (price as of 2026-08-18) |
| Nov. 19, 2019 | DLB | X | 751 | — | — | 0 Direct | — | Acquired | (price as of 2026-08-18) |
| Nov. 19, 2019 | DLB | X | 534 | — | — | 0 Direct | — | Acquired | (price as of 2026-08-18) |
| Nov. 19, 2019 | DLB | X | 751 | $59.83 | $44,932 | 70,351 Direct | +1.08% | Acquired | 2.9% (price as of 2026-08-18) |
| Nov. 19, 2019 | DLB | X | 534 | $45.97 | $24,548 | 69,600 Direct | +0.77% | Acquired | 34.0% (price as of 2026-08-18) |
| Feb. 5, 2019 | DLB | A | 3,996 | — | — | 69,066 Direct | +6.14% | Acquired | (price as of 2026-08-18) |
| Feb. 6, 2018 | DLB | A | 3,920 | — | — | 65,070 Direct | +6.41% | Acquired | (price as of 2026-08-18) |
| Nov. 15, 2017 | DLB | X | 2,227 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-18) |
| Feb. 7, 2017 | DLB | A | 5,233 | — | — | 58,923 Direct | +9.75% | Acquired | (price as of 2026-08-18) |
| Feb. 2, 2016 | DLB | A | 7,575 | — | — | 53,690 Direct | +16.43% | Acquired | (price as of 2026-08-18) |
| Nov. 15, 2015 | DLB | X | 2,227 | $41.17 | $91,686 | 61,150 Direct | +3.78% | Acquired | 49.6% (price as of 2026-08-18) |
| Feb. 3, 2015 | DLB | A | 7,759 | — | — | 46,115 Direct | +20.23% | Acquired | (price as of 2026-08-18) |
| Feb. 10, 2014 | DLB | F | 13 | $40.98 | $533 | 38,356 Direct | -0.03% | Disposed | 50.3% (price as of 2026-08-18) |
| Feb. 4, 2014 | DLB | A | 7,411 | — | — | 38,369 Direct | +23.94% | Acquired | (price as of 2026-08-18) |
| Dec. 16, 2013 | DLB | F | 19 | $37.35 | $710 | 30,958 Direct | -0.06% | Disposed | 64.9% (price as of 2026-08-18) |
| Feb. 8, 2013 | DLB | F | 12 | $31.74 | $381 | 30,977 Direct | -0.04% | Disposed | 94.0% (price as of 2026-08-18) |
| Feb. 5, 2013 | DLB | A | 9,310 | — | — | 30,989 Direct | +42.94% | Acquired | (price as of 2026-08-18) |
| Dec. 17, 2012 | DLB | F | 19 | $35.34 | $671 | 21,679 Direct | -0.09% | Disposed | 74.3% (price as of 2026-08-18) |
| June 18, 2012 | DLB | F | 53 | $42.50 | $2,252 | 21,698 Direct | -0.24% | Disposed | 44.9% (price as of 2026-08-18) |
| Feb. 8, 2012 | DLB | F | 12 | $38.41 | $461 | 21,751 Direct | -0.06% | Disposed | 60.3% (price as of 2026-08-18) |
| Feb. 7, 2012 | DLB | A | 7,900 | — | — | 21,763 Direct | +56.99% | Acquired | (price as of 2026-08-18) |
| Dec. 15, 2011 | DLB | F | 18 | $31.45 | $566 | 13,863 Direct | -0.13% | Disposed | 95.8% (price as of 2026-08-18) |
| June 16, 2011 | DLB | F | 53 | $43.13 | $2,286 | 13,881 Direct | -0.38% | Disposed | 42.8% (price as of 2026-08-18) |
| Feb. 8, 2011 | DLB | F | 12 | $54.93 | $659 | 13,934 Direct | -0.09% | Disposed | 12.1% (price as of 2026-08-18) |
| Feb. 2, 2011 | DLB | A | 13,275 | — | — | 13,946 Direct | +1978.39% | Acquired | (price as of 2026-08-18) |
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 |
|---|---|---|---|---|---|---|---|
| Nov. 19, 2019 | DLB | Employee Stock Option (right to buy) | Class A Common Stock (751) | $59.83 | Dec. 15, 2020 | 751 | Acquired |
| Nov. 19, 2019 | DLB | Employee Stock Option (right to buy) | Class A Common Stock (534) | $45.97 | Feb. 8, 2020 | 534 | Acquired |
| Nov. 15, 2017 | DLB | Employee Stock Option (right to buy) | Class A Common Stock (2,227) | $41.17 | June 16, 2018 | 2,227 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 4, 2011 | DLB | Class A Common Stock | 671 | Direct |
| Feb. 4, 2011 | DLB | Stock Option (Right to Buy)→ Class A Common Stock (2,000) | 2,000 | Direct |
| Feb. 4, 2011 | DLB | Stock Option (Right to Buy)→ Class A Common Stock (480) | 480 | Direct |
| Feb. 4, 2011 | DLB | Stock Option (Right to Buy)→ Class A Common Stock (675) | 675 | Direct |
| Feb. 4, 2011 | DLB | Class B Common Stock→ Class A Common Stock (1,810,165) | 1,810,165 | Indirect |