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David Singer

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Insider profile

Currently holds a position at Castlight Health Inc

Positions

Position Company Period
Independent Director Castlight Health Inc June 1, 2010 -
Independent Director Pacific Biosciences of California Inc Jan. 1, 2006 - May 21, 2013
David Singer's trades of Churchill Capital Corp X's stock


Subscribe to get access to the transaction volume chart and in-chart transaction details
• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-29 2026-05-29
S Sale
42,544 -9.2%
16.68
US$3,618,521 		42,544 -9.2% 16.68 US$3,618,521
2026-05-29 2026-05-29
S Sale
91,507 -16.7%
295.28
US$4,503,595 		91,507 -16.7% 295.28 US$4,503,595
2026-05-29 2026-05-29
S Sale
45,535 +19.5%
183.64
US$2,044,560 		45,535 +19.5% 183.64 US$2,044,560
2026-05-29 2026-05-29
S Sale
1,353 -100.0%
17.91
US$24,226 		1,353 -100.0% 17.91 US$24,226
2026-05-29 2026-05-29
S Sale
7,277 -84.3%
16.85
US$122,620 		7,277 -84.3% 16.85 US$122,620
2026-05-29 2026-05-29
S Sale
169,411 -95.2%
16.05
US$2,719,385 		169,411 -95.2% 16.05 US$2,719,385
2026-05-27 2026-05-22
S Sale
751,744 -100.0%
17.04
US$12,810,319 		751,744 -100.0% 17.04 US$12,810,319
2026-05-27 2026-05-22
S Sale
2,635,848 -34.9%
16.70
US$44,027,360 		2,635,848 -34.9% 16.70 US$44,027,360
2026-05-27 2026-05-22
S Sale
137,795 -100.0%
17.04
US$2,348,137 		137,795 -100.0% 17.04 US$2,348,137
2026-05-27 2026-05-22
S Sale
1,669,369 -34.9%
16.70
US$27,883,971 		1,669,369 -34.9% 16.70 US$27,883,971
2026-05-27 2026-05-22
S Sale
35,450 -100.0%
17.04
US$604,096 		35,450 -100.0% 17.04 US$604,096
2026-05-27 2026-05-22
S Sale
19,761 -100.0%
17.04
US$336,743 		19,761 -100.0% 17.04 US$336,743
2026-05-27 2026-05-21
S Sale
2,128,025 -73.9%
14.69
US$31,267,923 		2,128,025 -73.9% 14.69 US$31,267,923
2026-05-27 2026-05-21
S Sale
2,262,112 -23.0%
14.69
US$33,238,116 		2,262,112 -23.0% 14.69 US$33,238,116
2026-05-27 2026-05-21
S Sale
390,066 -73.9%
14.69
US$5,731,396 		390,066 -73.9% 14.69 US$5,731,396
2026-05-27 2026-05-21
S Sale
1,432,671 -23.0%
14.69
US$21,050,808 		1,432,671 -23.0% 14.69 US$21,050,808
2026-05-27 2026-05-21
S Sale
100,350 -73.9%
14.69
US$1,474,483 		100,350 -73.9% 14.69 US$1,474,483
2026-05-27 2026-05-21
S Sale
55,939 -73.9%
14.69
US$821,934 		55,939 -73.9% 14.69 US$821,934
2004-10-28 2004-10-27
S Sale
1,000 -50.0%
30.89
US$30,890 		1,000 -50.0% 30.89 US$30,890
2004-10-28 2004-10-27
S Sale
23,666 -47.3%
30.89
US$731,123 		23,666 -47.3% 30.89 US$731,123
2004-07-28 2004-07-27
PlS Planned sale
500 -1.9%
26.60
US$13,300 		500 -1.9% 26.60 US$13,300
2004-07-21 2004-07-20
PlS Planned sale
500 -1.9%
28.65
US$14,325 		500 -1.9% 28.65 US$14,325
2004-07-14 2004-07-13
PlS Planned sale
500 -1.9%
30.50
US$15,250 		500 -1.9% 30.50 US$15,250
2004-07-07 2004-07-06
PlS Planned sale
500 -1.9%
30.82
US$15,410 		500 -1.9% 30.82 US$15,410
2004-05-26 2004-05-25
PlS Planned sale
500 -1.9%
29.36
US$14,680 		500 -1.9% 29.36 US$14,680
2004-05-18 2004-05-18
PlS Planned sale
500 -1.9%
30.70
US$15,350 		500 -1.9% 30.70 US$15,350
2004-05-12 2004-05-11
PlS Planned sale
500 -1.9%
29.93
US$14,965 		500 -1.9% 29.93 US$14,965
2004-05-04 2004-05-04
PlS Planned sale
500 -1.9%
31.23
US$15,615 		500 -1.9% 31.23 US$15,615