David Y Ma

Insider

Director

Trades at: SE

30D 90D 1Y

Net shares · 90d

-1.3M

0 buy · 1.3M sell

Net value · 90d

-$111.0M

$0 in · $111.0M out

Sentiment · 90d

Net selling

0% buying · 100% selling

Open-market trades · 90d

0 buy · 1.3M sell

Net buy / sell volume (all companies)

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions · open-market

Include grants & non-market

SE Sell·S
Apr 21, 26

Director · 10b5-1

$126.6K

1.4K sh · $89.74

Own -1%
SE Sell·S
Apr 21, 26

Director · 10b5-1

$2.2M

24.6K sh · $89.13

Own -11%
SE Sell·S
Apr 21, 26

Director · 10b5-1

$4.4M

49.7K sh · $88.09

Own -18%
SE Sell·S
Apr 21, 26

Director · 10b5-1

$2.5M

28.3K sh · $87.16

Own -9%
SE Sell·S
Apr 20, 26

Director · 10b5-1

$3.6M

40.2K sh · $89.93

Own -12%
SE Sell·S
Apr 20, 26

Director · 10b5-1

$11.4M

128.2K sh · $89.28

Own -27%
SE Sell·S
Apr 17, 26

Director · 10b5-1

$1.9M

20.7K sh · $93.04

Own -4%
SE Sell·S
Apr 17, 26

Director · 10b5-1

$7.0M

76.3K sh · $92.34

Own -13%
SE Sell·S
Apr 17, 26

Director · 10b5-1

$3.7M

40.1K sh · $91.47

Own -7%
SE Sell·S
Apr 17, 26

Director · 10b5-1

$726.4K

8.0K sh · $90.57

Own -1%
SE Sell·S
Apr 16, 26

Director · 10b5-1

$97.1K

1.0K sh · $93.05

Own -0%
SE Sell·S
Apr 16, 26

Director · 10b5-1

$581.4K

6.3K sh · $92.30

Own -1%
SE Sell·S
Apr 16, 26

Director · 10b5-1

$2.2M

23.7K sh · $91.33

Own -4%
SE Sell·S
Apr 16, 26

Director · 10b5-1

$7.5M

83.1K sh · $90.40

Own -11%
SE Sell·S
Apr 15, 26

Director · 10b5-1

$184.6K

2.0K sh · $90.97

Own -0%
SE Sell·S
Apr 15, 26

Director · 10b5-1

$4.8M

53.2K sh · $90.44

Own -7%
SE Sell·S
Apr 15, 26

Director · 10b5-1

$4.9M

55.2K sh · $89.52

Own -7%
SE Sell·S
Apr 15, 26

Director · 10b5-1

$2.7M

30.7K sh · $88.10

Own -4%
SE Sell·S
Apr 15, 26

Director · 10b5-1

$1.7M

19.7K sh · $87.73

Own -2%
SE Sell·S
Apr 15, 26

Director · 10b5-1

$274.7K

3.2K sh · $86.05

Own -0%
SE Sell·S
Apr 14, 26

Director · 10b5-1

$2.3M

25.4K sh · $89.65

Own -3%
SE Sell·S
Apr 14, 26

Director · 10b5-1

$4.3M

48.9K sh · $88.79

Own -5%
SE Sell·S
Apr 14, 26

Director · 10b5-1

$1.8M

20.3K sh · $88.05

Own -2%
SE Sell·S
Apr 14, 26

Director · 10b5-1

$2.2M

25.0K sh · $86.81

Own -2%
SE Sell·S
Apr 14, 26

Director · 10b5-1

$4.9M

57.2K sh · $85.74

Own -5%
SE Sell·S
Apr 13, 26

Director · 10b5-1

$410.9K

4.7K sh · $87.17

Own -0%
SE Sell·S
Apr 13, 26

Director · 10b5-1

$4.2M

48.8K sh · $86.46

Own -4%
SE Sell·S
Apr 13, 26

Director · 10b5-1

$2.3M

27.1K sh · $85.31

Own -2%
SE Sell·S
Apr 10, 26

Director · 10b5-1

$4.1M

47.1K sh · $86.19

Own -4%
SE Sell·S
Apr 10, 26

Director · 10b5-1

$6.5M

75.6K sh · $85.62

Own -6%
SE Sell·S
Apr 9, 26

Director · 10b5-1

$1.2M

14.5K sh · $85.31

Own -1%
SE Sell·S
Apr 8, 26

Director · 10b5-1

$248.1K

2.7K sh · $92.26

Own -0%
SE Sell·S
Apr 8, 26

Director · 10b5-1

$45.8K

500 sh · $91.59

Own -0%
SE Sell·S
Apr 8, 26

Director · 10b5-1

$669.3K

7.5K sh · $89.33

Own -1%
SE Sell·S
Apr 8, 26

Director · 10b5-1

$723.3K

8.2K sh · $88.36

Own -1%
SE Sell·S
Apr 8, 26

Director · 10b5-1

$4.3M

48.7K sh · $87.43

Own -4%
SE Sell·S
Apr 8, 26

Director · 10b5-1

$4.9M

56.9K sh · $86.83

Own -4%
SE Sell·S
Apr 8, 26

Director · 10b5-1

$3.3M

39.0K sh · $85.66

Own -3%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Apr 21, 2026	SE	Director	Sell S	1.4K	-1%	$89.74	$126.6K
Apr 21, 2026	SE	Director	Sell S	24.6K	-11%	$89.13	$2.2M
Apr 21, 2026	SE	Director	Sell S	49.7K	-18%	$88.09	$4.4M
Apr 21, 2026	SE	Director	Sell S	28.3K	-9%	$87.16	$2.5M
Apr 20, 2026	SE	Director	Sell S	40.2K	-12%	$89.93	$3.6M
Apr 20, 2026	SE	Director	Sell S	128.2K	-27%	$89.28	$11.4M
Apr 17, 2026	SE	Director	Sell S	20.7K	-4%	$93.04	$1.9M
Apr 17, 2026	SE	Director	Sell S	76.3K	-13%	$92.34	$7.0M
Apr 17, 2026	SE	Director	Sell S	40.1K	-7%	$91.47	$3.7M
Apr 17, 2026	SE	Director	Sell S	8.0K	-1%	$90.57	$726.4K
Apr 16, 2026	SE	Director	Sell S	1.0K	-0%	$93.05	$97.1K
Apr 16, 2026	SE	Director	Sell S	6.3K	-1%	$92.30	$581.4K
Apr 16, 2026	SE	Director	Sell S	23.7K	-4%	$91.33	$2.2M
Apr 16, 2026	SE	Director	Sell S	83.1K	-11%	$90.40	$7.5M
Apr 15, 2026	SE	Director	Sell S	2.0K	-0%	$90.97	$184.6K
Apr 15, 2026	SE	Director	Sell S	53.2K	-7%	$90.44	$4.8M
Apr 15, 2026	SE	Director	Sell S	55.2K	-7%	$89.52	$4.9M
Apr 15, 2026	SE	Director	Sell S	30.7K	-4%	$88.10	$2.7M
Apr 15, 2026	SE	Director	Sell S	19.7K	-2%	$87.73	$1.7M
Apr 15, 2026	SE	Director	Sell S	3.2K	-0%	$86.05	$274.7K
Apr 14, 2026	SE	Director	Sell S	25.4K	-3%	$89.65	$2.3M
Apr 14, 2026	SE	Director	Sell S	48.9K	-5%	$88.79	$4.3M
Apr 14, 2026	SE	Director	Sell S	20.3K	-2%	$88.05	$1.8M
Apr 14, 2026	SE	Director	Sell S	25.0K	-2%	$86.81	$2.2M
Apr 14, 2026	SE	Director	Sell S	57.2K	-5%	$85.74	$4.9M
Apr 13, 2026	SE	Director	Sell S	4.7K	-0%	$87.17	$410.9K
Apr 13, 2026	SE	Director	Sell S	48.8K	-4%	$86.46	$4.2M
Apr 13, 2026	SE	Director	Sell S	27.1K	-2%	$85.31	$2.3M
Apr 10, 2026	SE	Director	Sell S	47.1K	-4%	$86.19	$4.1M
Apr 10, 2026	SE	Director	Sell S	75.6K	-6%	$85.62	$6.5M
Apr 9, 2026	SE	Director	Sell S	14.5K	-1%	$85.31	$1.2M
Apr 8, 2026	SE	Director	Sell S	2.7K	-0%	$92.26	$248.1K
Apr 8, 2026	SE	Director	Sell S	500	-0%	$91.59	$45.8K
Apr 8, 2026	SE	Director	Sell S	7.5K	-1%	$89.33	$669.3K
Apr 8, 2026	SE	Director	Sell S	8.2K	-1%	$88.36	$723.3K
Apr 8, 2026	SE	Director	Sell S	48.7K	-4%	$87.43	$4.3M
Apr 8, 2026	SE	Director	Sell S	56.9K	-4%	$86.83	$4.9M
Apr 8, 2026	SE	Director	Sell S	39.0K	-3%	$85.66	$3.3M

About David Y Ma

This profile aggregates every SEC Form 4 insider transaction reported by David Y Ma across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.