Michael J Rockwell
CIK 1202483 · View on SEC EDGAR ↗
Insider
First SEC filing: March 12, 2009 · Latest: March 12, 2009
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 69 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
69 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Jan. 26, 2015 | DLB | S | 9,254 | $39.73 | $367,661 | 99,697 Direct | -8.49% | Disposed | 62.2% (price as of 2026-08-21) |
| Dec. 24, 2014 | DLB | S | 1,201 | $43.93 | $52,760 | 108,951 Direct | -1.09% | Disposed | 46.7% (price as of 2026-08-21) |
| Dec. 18, 2014 | DLB | S | 1,332 | $43.52 | $57,969 | 112,775 Direct | -1.17% | Disposed | 48.0% (price as of 2026-08-21) |
| Dec. 17, 2014 | DLB | S | 2,485 | $42.47 | $105,538 | 114,107 Direct | -2.13% | Disposed | 51.7% (price as of 2026-08-21) |
| Aug. 19, 2014 | DLB | S | 2,510 | $46.20 | $115,962 | 109,069 Direct | -2.25% | Disposed | 39.5% (price as of 2026-08-21) |
| Aug. 13, 2014 | DLB | S | 4,096 | $44.67 | $182,968 | 117,058 Direct | -3.38% | Disposed | 44.2% (price as of 2026-08-21) |
| Feb. 26, 2014 | DLB | S | 12,000 | $40.71 | $488,520 | 126,087 Direct | -8.69% | Disposed | 58.3% (price as of 2026-08-21) |
| Dec. 19, 2013 | DLB | S | 3,245 | $37.23 | $120,811 | 143,535 Direct | -2.21% | Disposed | 73.1% (price as of 2026-08-21) |
| Oct. 29, 2013 | DLB | S | 975 | $35.10 | $34,222 | 128,405 Direct | -0.75% | Disposed | 83.6% (price as of 2026-08-21) |
| May 8, 2012 | DLB | S | 8,128 | $44.22 | $359,420 | 55,392 Direct | -12.80% | Disposed | 45.7% (price as of 2026-08-21) |
| April 7, 2011 | DLB | S | 316 | $50.00 | $15,800 | 40,260 Direct | -0.78% | Disposed | 28.9% (price as of 2026-08-21) |
| Feb. 28, 2011 | DLB | S | 561 | $51.90 | $29,116 | 40,760 Direct | -1.36% | Disposed | 24.1% (price as of 2026-08-21) |
| Feb. 15, 2011 | DLB | S | 7,559 | $52.18 | $394,429 | 40,760 Direct | -15.64% | Disposed | 23.5% (price as of 2026-08-21) |
| Feb. 15, 2011 | DLB | S | 5,684 | $52.18 | $296,591 | 40,760 Direct | -12.24% | Disposed | 23.5% (price as of 2026-08-21) |
| Dec. 9, 2010 | DLB | S | 11,762 | $67.44 | $793,229 | 36,352 Direct | -24.45% | Disposed | -4.5% (price as of 2026-08-21) |
| Dec. 7, 2010 | DLB | S | 8,238 | $67.44 | $555,571 | 36,352 Direct | -18.47% | Disposed | -4.5% (price as of 2026-08-21) |
| Nov. 22, 2010 | DLB | S | 561 | $64.58 | $36,229 | 36,352 Direct | -1.52% | Disposed | -0.2% (price as of 2026-08-21) |
| Nov. 15, 2010 | DLB | S | 1,875 | $65.49 | $122,794 | 36,352 Direct | -4.90% | Disposed | -1.6% (price as of 2026-08-21) |
| Aug. 20, 2010 | DLB | S | 561 | $57.14 | $32,056 | 36,352 Direct | -1.52% | Disposed | 12.8% (price as of 2026-08-21) |
| Aug. 16, 2010 | DLB | S | 1,875 | $56.21 | $105,394 | 36,352 Direct | -4.90% | Disposed | 14.6% (price as of 2026-08-21) |
| June 15, 2010 | DLB | S | 5,880 | $68.75 | $404,250 | 36,352 Direct | -13.92% | Disposed | -6.3% (price as of 2026-08-21) |
| June 15, 2010 | DLB | S | 14,120 | $67.87 | $958,324 | 42,232 Direct | -25.06% | Disposed | -5.1% (price as of 2026-08-21) |
| June 3, 2010 | DLB | S | 20,000 | $67.65 | $1,353,000 | 36,352 Direct | -35.49% | Disposed | -4.8% (price as of 2026-08-21) |
| May 27, 2010 | DLB | S | 528 | $64.28 | $33,940 | 36,352 Direct | -1.43% | Disposed | 0.2% (price as of 2026-08-21) |
| May 27, 2010 | DLB | S | 8,086 | $63.53 | $513,704 | 36,880 Direct | -17.98% | Disposed | 1.4% (price as of 2026-08-21) |
| May 27, 2010 | DLB | S | 4,762 | $61.89 | $294,720 | 44,966 Direct | -9.58% | Disposed | 4.1% (price as of 2026-08-21) |
| May 27, 2010 | DLB | S | 528 | $64.28 | $33,940 | 36,352 Direct | -1.43% | Disposed | 0.2% (price as of 2026-08-21) |
| May 27, 2010 | DLB | S | 7,986 | $63.52 | $507,271 | 36,880 Direct | -17.80% | Disposed | 1.4% (price as of 2026-08-21) |
| May 27, 2010 | DLB | S | 4,862 | $61.88 | $300,861 | 44,866 Direct | -9.78% | Disposed | 4.1% (price as of 2026-08-21) |
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, 2014 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (99,337) | $44.14 | Dec. 15, 2024 | 99,337 | Acquired |
| Dec. 16, 2013 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (118,460) | $37.35 | Dec. 16, 2023 | 118,460 | Acquired |
| Dec. 16, 2013 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (100,000) | $37.35 | Dec. 16, 2023 | 100,000 | Acquired |
| Dec. 21, 2012 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (86,400) | $30.49 | Dec. 21, 2022 | 86,400 | Acquired |
| Aug. 15, 2012 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (84,000) | $34.54 | Aug. 15, 2022 | 84,000 | Acquired |
| Aug. 10, 2012 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (55,000) | $66.63 | Dec. 15, 2020 | 55,000 | Disposed |
| Aug. 10, 2012 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (66,000) | $51.19 | Feb. 8, 2020 | 66,000 | Disposed |
| Aug. 10, 2012 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (20,000) | $47.42 | Nov. 15, 2017 | 20,000 | Disposed |
| Dec. 15, 2011 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (121,200) | $31.45 | Dec. 15, 2021 | 121,200 | Disposed |
| Feb. 28, 2011 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (561) | $31.91 | March 16, 2019 | 561 | Disposed |
| Feb. 15, 2011 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (1,875) | $32.18 | Feb. 2, 2019 | 1,875 | Disposed |
| Dec. 15, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (55,000) | $66.63 | Dec. 15, 2020 | 55,000 | Acquired |
| Dec. 9, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (11,762) | $47.42 | Nov. 15, 2017 | 11,762 | Disposed |
| Dec. 7, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (8,238) | $47.42 | Nov. 15, 2017 | 8,238 | Disposed |
| Nov. 22, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (561) | $31.91 | March 16, 2019 | 561 | Disposed |
| Nov. 15, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (1,875) | $32.18 | Feb. 9, 2019 | 1,875 | Disposed |
| Aug. 20, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (561) | $31.91 | March 16, 2019 | 561 | Disposed |
| Aug. 16, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (1,875) | $32.18 | Feb. 9, 2019 | 1,875 | Disposed |
| June 15, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (20,000) | $47.42 | Nov. 15, 2017 | 20,000 | Disposed |
| June 3, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (20,000) | $47.42 | Nov. 15, 2017 | 20,000 | Disposed |
| May 27, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (2,625) | $31.91 | March 16, 2019 | 2,625 | Disposed |
| May 27, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (9,375) | $32.18 | Feb. 9, 2019 | 9,375 | Disposed |
| Feb. 8, 2010 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (66,000) | $51.19 | Feb. 8, 2020 | 66,000 | Acquired |
| March 16, 2009 | DLB | Employee Stock Option (Right to Buy) | Class A Common Stock (9,000) | $31.91 | March 16, 2019 | 9,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.