杜比實驗室公司
US ˙ NYSE ˙ US25659T1079

簡介

本頁面提供了有關 Ray Dolby 已知的內部交易歷史的全面分析。內部人士包括公司的高管、董事或重要投資者。一般而言，基於內幕、非公開信息進行交易是非法的。這並不意味著他們在自己的公司進行任何交易都是非法的。但是，他們必須透過Form 4向美國證券交易委員會（SEC）報告所有交易。盡管存在這些限制，學術研究表明，內部人士 - 整體而言 - 在自己公司中的投資表現往往優於市場。

平均交易盈利能力

「平均交易盈利能力」衡量了內部人士在過去三年中所有非計劃性的公開市場購買交易的平均回報率。計算過程包括檢查每筆交易，排除了作為10b5-1交易計劃的一部分的交易。然後，對每筆交易在3、6和12個月的表現進行平均，以生成該筆交易最終的表現指標。最終，將所有交易的表現指標進行平均，計算出內部人士的總體平均表現指標。列表僅包含在過去兩年中進行過至少三筆交易的內部人士。

如果內部人士的交易盈利能力顯示為"N/A"，則可能是因為該內部人士在過去三年內沒有進行任何公開市場購買交易，或者他們進行的交易距離現在太近，無法計算出可靠的表現指標。

更新頻率：每日

查看收益最高的的內幕交易者列表。

查看排名最高的內部人士。
報告內部持倉的公司

SEC文件顯示Ray Dolby已報告在以下公司擁有持倉或進行了交易：

證券 職位 最新報告的持倉
US:DLB / Dolby Laboratories, Inc. 10% Owner 39,935,848
如何解讀這些圖表

以下圖表顯示了在Ray Dolby進行的每筆公開市場非計劃交易後證券的股價表現。非計劃交易是指沒有作為10b5-1交易計劃的一部分而進行的交易。股價表現以累積百分比變化的方式繪製。例如，如果一筆內部人士交易是在2019年1月1日進行的，該圖表將顯示該證券的每日百分比變化直至當前日期。如果在此期間股價從10美元漲至15美元，則股價的累積百分比變化將為50%。從10美元漲至20美元的價格變化將為100%，而從10美元跌至5美元的價格變化將為-50%。

最終，我們將評估內部人士的交易與股價的超額回報（正向或負向）之間的相關性，以判斷內部人士是否在交易中利用內部信息獲利。如果內部人士有這樣的行為，我們預期看到（a）購買後的正回報，或者（b）賣出後的負回報。對於情況（a），購買圖表將顯示一系列向上傾斜的曲線，表示每次購買後都有正回報。對於情況（b），賣出圖表將顯示一系列向下傾斜的曲線，表示每次賣出後都有負回報。

然而，僅憑這一點還不足以得出結論。例如，如果公司的股價在多年內呈現非周期性上升，我們會預期所有購買後的圖表都呈現向上傾斜。同樣地，多年來呈現非周期性下降的股價會導致賣出後的圖表也呈現向下傾斜。這兩種情況的圖表都不能表示內部人士在進行內幕交易。

最有力的指標是在公司股價呈極度循環波動的情況下，「購買」圖表顯示正向信號，而「賣出」圖表顯示負向趨勢。這種情況強烈暗示內部人士可能根據內幕信息精確地計時進行交易，以獲得財務優勢。

DLB / Dolby Laboratories, Inc.內部人士買入 - 短期收益分析

在這一部分，我們分析了在 DLB / Dolby Laboratories, Inc. 中進行的每筆非計劃的公開市場內部人士購買的盈利情況。這種分析有助於了解內部人士是否持續產生異常的回報，以及是否值得跟踪。該分析基於每筆交易後一年的情況，結果僅為理論值。

以下表格顯示了最近的自動交易計劃之外的公開市場購買。

交易日期 證券代碼 內部人士 報告
股數		 Reported
價格		 經調整
股數		 經調整
價格		 成本基礎 達到最高利潤的
天數		 達到最高利潤時的
價格		 最高
淨利 ($)		 最高回報率（%）
當前未知該內部人士及證券組合進行過任何未預先計劃的公開市場交易。

經調整價格 已按拆股調整。經調整股數 已按拆股調整。

DLB / Dolby Laboratories, Inc. Insider Trades
DLB / Dolby Laboratories, Inc.內部人士賣出 - 短期虧損分析

在這一部分，我們分析了在 DLB / Dolby Laboratories, Inc. 中進行的每筆非計劃的公開市場內部人士賣出所達成的短期虧損規避。如果存在持續的虧損規避模式，可能表明未來的內部人士賣出交易預示著價格的下跌。該分析基於每筆交易後一年的情況，

以下表格顯示了最近的自動交易計劃之外的公開市場購買。

交易日期 證券代碼 內部人士 報告
股數		 Reported
價格		 經調整
股數		 經調整
價格		 成本基礎 達到最低利潤的
天數		 達到最低利潤時的
價格		 避免的
最高損失金額($)		 避免的
最高損失率($)
2013-06-10 DLB Dolby Ray 20,000 35.0070 20,000 35.0070 700,140 88 31.3800 -72,540 -10.36
2013-06-07 DLB Dolby Ray 18,171 35.0089 18,171 35.0089 636,147
2013-06-03 DLB Dolby Ray 3,500 35.0613 3,500 35.0613 122,715
2013-05-31 DLB Dolby Ray 20,000 35.1364 20,000 35.1364 702,728
2013-05-30 DLB Dolby Ray 20,000 35.3259 20,000 35.3259 706,518
2013-05-29 DLB Dolby Ray 20,000 35.5998 20,000 35.5998 711,996
2013-05-28 DLB Dolby Ray 20,000 35.0000 20,000 35.0000 700,000
2012-12-18 DLB Dolby Ray 20,000 35.3432 20,000 35.3432 706,864
2012-12-17 DLB Dolby Ray 20,000 35.2638 20,000 35.2638 705,276
2012-12-13 DLB Dolby Ray 1,300 35.0157 1,300 35.0157 45,520
2012-12-12 DLB Dolby Ray 12,903 35.4389 12,903 35.4389 457,268
2012-12-12 DLB Dolby Ray 5,800 36.2884 5,800 36.2884 210,473
2012-11-06 DLB Dolby Ray 6,388 35.0098 6,388 35.0098 223,643
2012-11-05 DLB Dolby Ray 11,300 35.0000 11,300 35.0000 395,500
2012-09-25 DLB Dolby Ray 4,573 35.0000 4,573 35.0000 160,055
2012-09-24 DLB Dolby Ray 18,161 35.0028 18,161 35.0028 635,686
2012-09-21 DLB Dolby Ray 100 35.0000 100 35.0000 3,500
2012-09-20 DLB Dolby Ray 2,600 35.0167 2,600 35.0167 91,043
2012-09-19 DLB Dolby Ray 3,000 35.1080 3,000 35.1080 105,324
2012-09-18 DLB Dolby Ray 10,000 35.0331 10,000 35.0331 350,331
2012-09-18 DLB Dolby Ray 17,000 35.0714 17,000 35.0714 596,214
2012-09-17 DLB Dolby Ray 9,900 34.7184 9,900 34.7184 343,712
2012-09-17 DLB Dolby Ray 100 35.4000 100 35.4000 3,540
2012-09-17 DLB Dolby Ray 3,000 35.0890 3,000 35.0890 105,267
2012-09-14 DLB Dolby Ray 10,000 35.3893 10,000 35.3893 353,893
2012-09-14 DLB Dolby Ray 20,000 35.3959 20,000 35.3959 707,918
2012-09-13 DLB Dolby Ray 10,000 34.7617 10,000 34.7617 347,617
2012-09-13 DLB Dolby Ray 20,000 35.0016 20,000 35.0016 700,032
2012-09-12 DLB Dolby Ray 10,000 34.8047 10,000 34.8047 348,047
2012-09-12 DLB Dolby Ray 2,200 35.2250 2,200 35.2250 77,495
2012-09-11 DLB Dolby Ray 10,000 35.2436 10,000 35.2436 352,436
2012-09-11 DLB Dolby Ray 20,000 35.2540 20,000 35.2540 705,080
2012-09-10 DLB Dolby Ray 10,000 34.9829 10,000 34.9829 349,829
2012-09-10 DLB Dolby Ray 7,769 35.0860 7,769 35.0860 272,583
2012-09-07 DLB Dolby Ray 10,000 34.7601 10,000 34.7601 347,601
2012-09-07 DLB Dolby Ray 6,900 35.0135 6,900 35.0135 241,593
2012-09-06 DLB Dolby Ray 10,000 34.1055 10,000 34.1055 341,055
2012-09-05 DLB Dolby Ray 10,000 33.5792 10,000 33.5792 335,792
2012-09-04 DLB Dolby Ray 10,000 33.5142 10,000 33.5142 335,142
2012-08-31 DLB Dolby Ray 10,000 33.1490 10,000 33.1490 331,490
2012-08-30 DLB Dolby Ray 10,000 33.0943 10,000 33.0943 330,943
2012-08-29 DLB Dolby Ray 10,000 33.8126 10,000 33.8126 338,126
2012-08-28 DLB Dolby Ray 10,000 34.2111 10,000 34.2111 342,111
2012-08-27 DLB Dolby Ray 10,000 34.0745 10,000 34.0745 340,745
2012-08-24 DLB Dolby Ray 10,000 33.9506 10,000 33.9506 339,506
2012-08-23 DLB Dolby Ray 9,700 33.6356 9,700 33.6356 326,265
2012-08-23 DLB Dolby Ray 300 34.3867 300 34.3867 10,316
2012-08-22 DLB Dolby Ray 10,000 34.6556 10,000 34.6556 346,556
2012-08-22 DLB Dolby Ray 400 35.0563 400 35.0563 14,023
2012-08-21 DLB Dolby Ray 10,000 35.1245 10,000 35.1245 351,245
2012-08-21 DLB Dolby Ray 11,557 35.2819 11,557 35.2819 407,753
2012-08-20 DLB Dolby Ray 10,000 35.1953 10,000 35.1953 351,953
2012-08-20 DLB Dolby Ray 20,000 35.1980 20,000 35.1980 703,960
2012-08-17 DLB Dolby Ray 10,000 35.1201 10,000 35.1201 351,201
2012-08-17 DLB Dolby Ray 20,000 35.1217 20,000 35.1217 702,434
2012-08-16 DLB Dolby Ray 9,600 34.9760 9,600 34.9760 335,770
2012-08-16 DLB Dolby Ray 400 35.4300 400 35.4300 14,172
2012-08-16 DLB Dolby Ray 20,000 35.1595 20,000 35.1595 703,190
2012-08-15 DLB Dolby Ray 10,000 34.5761 10,000 34.5761 345,761
2012-08-14 DLB Dolby Ray 10,000 34.4082 10,000 34.4082 344,082
2012-08-13 DLB Dolby Ray 9,900 34.2182 9,900 34.2182 338,760
2012-08-13 DLB Dolby Ray 100 34.8100 100 34.8100 3,481
2012-08-10 DLB Dolby Ray 10,000 34.4100 10,000 34.4100 344,100
2012-08-09 DLB Dolby Ray 10,000 34.2372 10,000 34.2372 342,372
2012-08-08 DLB Dolby Ray 10,000 33.6700 10,000 33.6700 336,700
2012-08-07 DLB Dolby Ray 3,111 32.3156 3,111 32.3156 100,534
2012-08-07 DLB Dolby Ray 1,322 33.2050 1,322 33.2050 43,897
2012-08-07 DLB Dolby Ray 5,567 34.0170 5,567 34.0170 189,373
2012-08-07 DLB Dolby Ray 1,000 31.7500 1,000 31.7500 31,750
2012-08-07 DLB Dolby Ray 1,000 31.7500 1,000 31.7500 31,750
2010-05-27 DLB Dolby Ray 6,200 61.3400 6,200 61.3400 380,308
2010-05-27 DLB Dolby Ray 1,400 62.5200 1,400 62.5200 87,528
2010-05-27 DLB Dolby Ray 2,400 63.8700 2,400 63.8700 153,288
2010-05-27 DLB Dolby Ray 6,800 61.3268 6,800 61.3268 417,022
2010-05-27 DLB Dolby Ray 3,100 63.5500 3,100 63.5500 197,005
2010-05-27 DLB Dolby Ray 100 64.2800 100 64.2800 6,428

經調整價格 已按拆股調整。經調整股數 已按拆股調整。

DLB / Dolby Laboratories, Inc. Insider Trades
歷史內部人交易

該表格顯示了由 Ray Dolby 進行的所有內幕交易的完整列表，這些交易已向美國證券交易委員會（SEC）披露。

呈報日期 交易日期 表格 證券代碼 證券 代碼 10b5-1 股份 剩餘股份 %
變化		 每股
股價		 交易
金額		 剩餘
金額
2013-06-11 2013-06-10 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 39,935,848 -0.05
2013-06-11 2013-06-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.01 -700,140
2013-06-11 2013-06-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2013-06-11 2013-06-07 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -18,171 39,955,848 -0.05
2013-06-11 2013-06-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -18,171 0 -100.00 35.01 -636,147
2013-06-11 2013-06-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 18,171 18,171
2013-06-04 2013-06-03 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -3,500 39,974,019 -0.01
2013-06-04 2013-06-03 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -3,500 0 -100.00 35.06 -122,715
2013-06-04 2013-06-03 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 3,500 3,500
2013-06-03 2013-05-31 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 39,977,519 -0.05
2013-06-03 2013-05-31 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.14 -702,728
2013-06-03 2013-05-31 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2013-06-03 2013-05-30 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 39,997,519 -0.05
2013-06-03 2013-05-30 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.33 -706,518
2013-06-03 2013-05-30 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2013-05-31 2013-05-29 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 40,017,519 -0.05
2013-05-31 2013-05-29 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.60 -711,996
2013-05-31 2013-05-29 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2013-05-30 2013-05-28 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 40,037,519 -0.05
2013-05-30 2013-05-28 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.00 -700,000
2013-05-30 2013-05-28 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2013-01-02 2012-12-31 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		J - Other -2,500,000 2,500,000 -50.00
2013-01-02 2012-12-18 4/A DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -1,430,000 39,224,719 -3.52
2013-01-02 2012-12-18 4/A DLB Dolby Laboratories, Inc.
Class A Common Stock 		G - Gift -1,430,000 0 -100.00
2013-01-02 2012-12-18 4/A DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 1,430,000 1,430,000
2012-12-20 2012-12-18 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -1,800,000 38,854,719 -4.43
2012-12-20 2012-12-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		G - Gift -1,800,000 0 -100.00
2012-12-20 2012-12-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 1,800,000 1,800,000
2012-12-19 2012-12-18 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,154,719 -0.05
2012-12-19 2012-12-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.34 -706,864
2012-12-19 2012-12-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-12-18 2012-12-17 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,174,719 -0.05
2012-12-18 2012-12-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.26 -705,276
2012-12-18 2012-12-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-12-14 2012-12-13 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -1,300 43,194,719 0.00
2012-12-14 2012-12-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -1,300 0 -100.00 35.02 -45,520
2012-12-14 2012-12-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 1,300 1,300
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -18,703 43,196,019 -0.04
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -5,800 0 -100.00 36.29 -210,473
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -12,903 5,800 -68.99 35.44 -457,268 205,546
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 18,703 18,703
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -18,703 43,196,019 -0.04
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -5,800 0 -100.00 36.29 -210,473
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -12,903 5,800 -68.99 35.44 -457,268 205,546
2012-12-13 2012-12-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 18,703 18,703
2012-11-07 2012-11-06 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -6,388 43,214,722 -0.01
2012-11-07 2012-11-06 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -6,388 0 -100.00 35.01 -223,643
2012-11-07 2012-11-06 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 6,388 6,388
2012-11-07 2012-11-05 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -11,300 43,221,110 -0.03
2012-11-07 2012-11-05 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -11,300 0 -100.00 35.00 -395,500
2012-11-07 2012-11-05 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 11,300 11,300
2012-09-26 2012-09-25 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -4,573 43,232,410 -0.01
2012-09-26 2012-09-25 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -4,573 0 -100.00 35.00 -160,055
2012-09-26 2012-09-25 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 4,573 4,573
2012-09-25 2012-09-24 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -18,161 43,236,983 -0.04
2012-09-25 2012-09-24 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -18,161 0 -100.00 35.00 -635,686
2012-09-25 2012-09-24 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 18,161 18,161
2012-09-24 2012-09-21 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -100 43,255,144 0.00
2012-09-24 2012-09-21 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -100 0 -100.00 35.00 -3,500
2012-09-24 2012-09-21 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 100 100
2012-09-21 2012-09-20 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -2,600 43,255,244 -0.01
2012-09-21 2012-09-20 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -2,600 0 -100.00 35.02 -91,043
2012-09-21 2012-09-20 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 2,600 2,600
2012-09-20 2012-09-18 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -17,000 43,260,844 -0.04
2012-09-20 2012-09-18 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,410,165 -0.70
2012-09-20 2012-09-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -17,000 0 -100.00 35.07 -596,214
2012-09-20 2012-09-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 35.03 -350,331
2012-09-20 2012-09-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 17,000 17,000
2012-09-20 2012-09-18 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-20 2012-09-19 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -3,000 43,257,844 -0.01
2012-09-20 2012-09-19 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -3,000 0 -100.00 35.11 -105,324
2012-09-20 2012-09-19 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 3,000 3,000
2012-09-18 2012-09-17 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -3,000 43,277,844 -0.01
2012-09-18 2012-09-17 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,420,165 -0.70
2012-09-18 2012-09-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -3,000 0 -100.00 35.09 -105,267
2012-09-18 2012-09-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -100 0 -100.00 35.40 -3,540
2012-09-18 2012-09-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -9,900 100 -99.00 34.72 -343,712 3,472
2012-09-18 2012-09-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 3,000 3,000
2012-09-18 2012-09-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-18 2012-09-13 4/A DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,300,844 -0.05
2012-09-17 2012-09-14 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,280,844 -0.05
2012-09-17 2012-09-14 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,430,165 -0.69
2012-09-17 2012-09-14 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.40 -707,918
2012-09-17 2012-09-14 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 35.39 -353,893
2012-09-17 2012-09-14 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-09-17 2012-09-14 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-14 2012-09-13 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -2,200 43,300,844 -0.01
2012-09-14 2012-09-13 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,440,165 -0.69
2012-09-14 2012-09-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.00 -700,032
2012-09-14 2012-09-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.76 -347,617
2012-09-14 2012-09-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-09-14 2012-09-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-13 2012-09-12 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -2,200 43,320,844 -0.01
2012-09-13 2012-09-12 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,450,165 -0.68
2012-09-13 2012-09-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -2,200 0 -100.00 35.22 -77,495
2012-09-13 2012-09-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.80 -348,047
2012-09-13 2012-09-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 2,200 2,200
2012-09-13 2012-09-12 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-12 2012-09-11 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,323,044 -0.05
2012-09-12 2012-09-11 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,460,165 -0.68
2012-09-12 2012-09-11 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.25 -705,080
2012-09-12 2012-09-11 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 35.24 -352,436
2012-09-12 2012-09-11 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-09-12 2012-09-11 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-11 2012-09-10 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -7,769 43,343,044 -0.02
2012-09-11 2012-09-10 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,470,165 -0.68
2012-09-11 2012-09-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -7,769 0 -100.00 35.09 -272,583
2012-09-11 2012-09-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.98 -349,829
2012-09-11 2012-09-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 7,769 7,769
2012-09-11 2012-09-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-10 2012-09-07 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -6,900 43,350,813 -0.02
2012-09-10 2012-09-07 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,480,165 -0.67
2012-09-10 2012-09-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -6,900 0 -100.00 35.01 -241,593
2012-09-10 2012-09-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.76 -347,601
2012-09-10 2012-09-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 6,900 6,900
2012-09-10 2012-09-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-07 2012-09-06 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,490,165 -0.67
2012-09-07 2012-09-06 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.11 -341,055
2012-09-07 2012-09-06 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-06 2012-09-05 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,500,165 -0.66
2012-09-06 2012-09-05 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 33.58 -335,792
2012-09-06 2012-09-05 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-05 2012-09-04 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,510,165 -0.66
2012-09-05 2012-09-04 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 33.51 -335,142
2012-09-05 2012-09-04 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-04 2012-08-30 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,530,165 -0.65
2012-09-04 2012-08-30 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 33.09 -330,943
2012-09-04 2012-08-30 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-09-04 2012-08-31 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,520,165 -0.65
2012-09-04 2012-08-31 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 33.15 -331,490
2012-09-04 2012-08-31 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-30 2012-08-29 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,540,165 -0.65
2012-08-30 2012-08-29 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 33.81 -338,126
2012-08-30 2012-08-29 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-29 2012-08-28 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,550,165 -0.64
2012-08-29 2012-08-28 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.21 -342,111
2012-08-29 2012-08-28 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-28 2012-08-27 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,560,165 -0.64
2012-08-28 2012-08-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.07 -340,745
2012-08-28 2012-08-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-27 2012-08-24 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,570,165 -0.63
2012-08-27 2012-08-24 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 33.95 -339,506
2012-08-27 2012-08-24 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-24 2012-08-23 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,580,165 -0.63
2012-08-24 2012-08-23 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -300 0 -100.00 34.39 -10,316
2012-08-24 2012-08-23 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -9,700 300 -97.00 33.64 -326,265 10,091
2012-08-24 2012-08-23 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-23 2012-08-22 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -400 43,357,713 0.00
2012-08-23 2012-08-22 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,590,165 -0.62
2012-08-23 2012-08-22 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -400 0 -100.00 35.06 -14,023
2012-08-23 2012-08-22 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.66 -346,556
2012-08-23 2012-08-22 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 400 400
2012-08-23 2012-08-22 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-22 2012-08-21 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -11,557 43,358,113 -0.03
2012-08-22 2012-08-21 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,600,165 -0.62
2012-08-22 2012-08-21 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -11,557 0 -100.00 35.28 -407,753
2012-08-22 2012-08-21 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 35.12 -351,245
2012-08-22 2012-08-21 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 11,557 11,557
2012-08-22 2012-08-21 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-21 2012-08-20 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,369,670 -0.05
2012-08-21 2012-08-20 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,610,165 -0.62
2012-08-21 2012-08-20 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.20 -703,960
2012-08-21 2012-08-20 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 35.20 -351,953
2012-08-21 2012-08-20 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-08-21 2012-08-20 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-20 2012-08-17 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,389,670 -0.05
2012-08-20 2012-08-17 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,620,165 -0.61
2012-08-20 2012-08-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.12 -702,434
2012-08-20 2012-08-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 35.12 -351,201
2012-08-20 2012-08-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-08-20 2012-08-17 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-17 2012-08-16 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -20,000 43,409,670 -0.05
2012-08-17 2012-08-16 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,630,165 -0.61
2012-08-17 2012-08-16 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -20,000 0 -100.00 35.16 -703,190
2012-08-17 2012-08-16 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -400 0 -100.00 35.43 -14,172
2012-08-17 2012-08-16 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -9,600 400 -96.00 34.98 -335,770 13,990
2012-08-17 2012-08-16 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 20,000 20,000
2012-08-17 2012-08-16 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-16 2012-08-15 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,640,165 -0.61
2012-08-16 2012-08-15 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.58 -345,761
2012-08-16 2012-08-15 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-15 2012-08-14 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,650,165 -0.60
2012-08-15 2012-08-14 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.41 -344,082
2012-08-15 2012-08-14 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-14 2012-08-13 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,660,165 -0.60
2012-08-14 2012-08-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -100 0 -100.00 34.81 -3,481
2012-08-14 2012-08-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -9,900 100 -99.00 34.22 -338,760 3,422
2012-08-14 2012-08-13 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-13 2012-08-10 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,670,165 -0.60
2012-08-13 2012-08-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.41 -344,100
2012-08-13 2012-08-10 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-10 2012-08-09 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,680,165 -0.59
2012-08-10 2012-08-09 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 34.24 -342,372
2012-08-10 2012-08-09 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-09 2012-08-08 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,690,165 -0.59
2012-08-09 2012-08-08 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -10,000 0 -100.00 33.67 -336,700
2012-08-09 2012-08-08 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -1,000 4,999,000 -0.02
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -1,000 4,999,000 -0.02
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 1,700,165 -0.58
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -1,000 0 -100.00 31.75 -31,750
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -1,000 0 -100.00 31.75 -31,750
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -5,567 0 -100.00 34.02 -189,373
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -1,322 5,567 -19.19 33.20 -43,897 184,852
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -3,111 6,889 -31.11 32.32 -100,534 222,622
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 1,000 1,000
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 1,000 1,000
2012-08-08 2012-08-07 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2012-06-20 2012-06-19 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		G - Gift -25,000 0 -100.00
2012-06-20 2012-06-19 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		G - Gift -59,000 59,000 -50.00
2012-06-20 2012-06-19 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 84,000 84,000
2012-06-20 2012-06-18 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -84,000 43,429,670 -0.19
2012-02-24 2012-02-22 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -110,000 43,513,670 -0.25
2012-02-24 2012-02-22 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		G - Gift -110,000 0 -100.00
2012-02-24 2012-02-22 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 110,000 110,000
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 2,300,165 -0.43
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class B Common Stock 		C - Conversion -10,000 2,300,165 -0.43
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -100 0 -100.00 64.28 -6,428
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -3,100 100 -96.88 63.55 -197,005 6,355
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -6,800 3,200 -68.00 61.33 -417,022 196,246
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -2,400 0 -100.00 63.87 -153,288
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -1,400 2,400 -36.84 62.52 -87,528 150,048
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		S - Sale -6,200 3,800 -62.00 61.34 -380,308 233,092
2010-06-01 2010-05-27 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		C - Conversion 10,000 10,000
2010-02-10 2010-02-09 4 DLB Dolby Laboratories, Inc.
Class A Common Stock 		A - Award 10,000 10,100 10,000.00
P
非衍生或衍生證券的公開市場或私下買入
S
非衍生或衍生證券的公開市場或私下賣出
A
公司向內部人員授予、獎勵或以其他方式獲取證券（例如股票期權）
C
衍生工具轉換
D
將證券賣出或轉讓回公司
F
使用從公司收到的證券的一部分來支付行使價或稅務負擔。
G
內部人士贈送或接收他人贈送公司股票
K
股權掉期和類似的避險交易
M
行使或轉換從公司獲得的衍生證券（例如期權）
V
內部人士透過Form 4自願報告的一筆交易
J
其他（附有交易描述的腳註）