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Supermicro

SMCI Net selling
CIK 0001375365 #424 in the set updated 17 Sep 2026
Bought (120 mo)
$3.95M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$288.98M
$67.80M on a plan · $112.21M straight out of an exercise
Sold at will
$108.97M
94 of 314 sales
Net
−$285.04M
−$105.02M against sales at will

By person

25 insiders · 340 transactions

There is no salary here to measure against. Supermicro's chief executive is paid a token, so dividing a holding by it says nothing.

Which is why this company is in neither direction of the chief executive filter on the transactions page. A stake that cannot be expressed as a multiple is not the same thing as a small one.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Liu Liang Chiu-Chu Sara
Director
$104.77M (100) scheduled
−$104.77M
91,528,666
13.93%
$3.66B
−1.6%
Liang Charles
President and CEO
$104.76M (100) scheduled
−$104.76M
66,833,652
10.17%
$2.67B
−2.9%
CLEGG DON W
SVP, Worldwide Sales
$29.76M (26) scheduled
−$29.76M
50,540
0.0077%
$2.02M
+59.9%
WEIGAND DAVID E
SVP, Chief Financial Officer
$19.91M (9) scheduled
−$19.91M
134,730
0.0205%
$5.39M
+1.7%
KAO GEORGE
SVP, OPERATIONS
$14.97M (11) scheduled
−$14.97M
134,691
0.0205%
$5.39M
+60.9%
TUAN SHERMAN
Director
$9.11M (25)
−$9.11M
207,156
0.0315%
$8.29M
0.0%
CHAN SHIU LEUNG
Director
$3.95M (10)
+$3.95M
42,917
0.0065%
$1.72M
+1,126%
FAIRFAX DANIEL W
Director
$1.64M (9) scheduled
−$1.64M
19,833
0.0030%
$793.32K
Tsai Hwei-Ming Fred
Director
$1.31M (17)
−$1.31M
258,600
0.0394%
$10.34M
+1.0%
BLAIR ROBERT L
Director
$1.03M (3) scheduled
−$1.03M
6,963
0.0011%
$278.52K
+32.0%
LIU TALLY C
Director
$835.94K (2)
−$835.94K
288,738
0.0440%
$11.55M
+13.4%
Hideshima Howard
Chief Financial Officer
$583.84K (1) scheduled
−$583.84K
1,220
0.0002%
$48.80K
CHOU CHENG-HSIEN PHIDIAS
VP Worldwide Sales
$251.64K (10) scheduled
−$251.64K
1,560
0.0002%
$62.40K
Lin Judy L.
Director
$48.76K (1)
−$48.76K
60,323
0.0092%
$2.41M
+25.6%
Liaw Yih-Shyan Wally
Director
15,084,942
2.30%
$603.40M
−0.9%
Xiao Jin
Sr. Corporate VP, Engineering
194,639
0.0296%
$7.79M
+6.6%
Cheung Kenneth
SVP, Chief Accounting Officer
63,772
0.0097%
$2.55M
+31.8%
Malyala Vikranth
SVP, Chief Business Officer
47,877
0.0073%
$1.92M
+37.3%
Tseng Saria
Director
29,889
0.0045%
$1.20M
McAndrews Michael S
Director
21,600
0.0033%
$864.00K
Bauer Kevin S
Chief Financial Officer
8,845
0.0013%
$353.80K
Mogensen Susan
Director
8,663
0.0013%
$346.52K
+2,607%
Angel Scott
Director
7,055
0.0011%
$282.20K
Thauberger Matthew
Chief Revenue Officer
6,487
0.0010%
$259.48K
+34.9%
Hsu Alex
Chief Operating Officer
2,394
0.0004%
$95.76K
+295.0%
Insider
Date
Role
Action
Shares
Price
Amount
TUAN SHERMAN
26 Nov 2025
Director
Sell
48,630
$33.00
$1.60M
WEIGAND DAVID E
20 May 2025
SVP, Chief Financial Officer
Sell
67,000
$44.02
$2.95M
Liu Liang Chiu-Chu Sara
14 May 2025
Director
Sell indirect
15,306
$45.56
$697.40K
Liu Liang Chiu-Chu Sara
14 May 2025
Director
Sell indirect
184,694
$44.98
$8.31M
Liang Charles
14 May 2025
President and CEO
Sell
15,306
$44.56
$682.09K
Liang Charles
14 May 2025
President and CEO
Sell
184,694
$44.98
$8.31M
KAO GEORGE
26 Feb 2025
SVP, OPERATIONS
Sell
71,720
$50.48
$3.62M
Liu Liang Chiu-Chu Sara
26 Feb 2025
Director
Sell
46,293
$50.17
$2.32M
Liang Charles
26 Feb 2025
President and CEO
Sell indirect
46,293
$50.17
$2.32M
LIU TALLY C
30 May 2024
Director
Sell
500
$839.17
$419.59K
TUAN SHERMAN
29 Feb 2024
Director
Sell
1,100
$875.69
$963.26K
TUAN SHERMAN
29 Feb 2024
Director
Sell
2,023
$874.65
$1.77M
TUAN SHERMAN
29 Feb 2024
Director
Sell
752
$873.43
$656.82K
TUAN SHERMAN
29 Feb 2024
Director
Sell
125
$872.00
$109.00K
TUAN SHERMAN
29 Feb 2024
Director
Sell
1,000
$871.38
$871.38K
TUAN SHERMAN
5 Dec 2023
Director
Sell
500
$252.18
$126.09K
Liu Liang Chiu-Chu Sara
5 Dec 2023
Director
Sell indirect
50,000
$252.18
$12.61M
Liang Charles
5 Dec 2023
President and CEO
Sell
50,000
$252.18
$12.61M
BLAIR ROBERT L
5 Dec 2023
Director
Sell
800
$252.18
$201.74K
WEIGAND DAVID E
5 Dec 2023
SVP, Chief Financial Officer
Sell
20,000
$252.18
$5.04M
TUAN SHERMAN
30 Aug 2023
Director
Sell
1,000
$272.00
$272.00K
KAO GEORGE
11 May 2023
SVP, OPERATIONS
Sell
553
$135.19
$74.76K
Lin Judy L.
16 Feb 2023
Director
Sell
500
$97.52
$48.76K
TUAN SHERMAN
8 Feb 2023
Director
Sell
1,000
$87.00
$87.00K
LIU TALLY C
6 Feb 2023
Director
Sell
5,000
$83.27
$416.36K
KAO GEORGE
3 Feb 2023
SVP, OPERATIONS
Sell
2,000
$85.04
$170.08K
CLEGG DON W
23 Nov 2022
SVP, Worldwide Sales
Sell
1,000
$91.03
$91.03K
TUAN SHERMAN
8 Nov 2022
Director
Sell
421
$78.01
$32.84K
TUAN SHERMAN
7 Nov 2022
Director
Sell
4,579
$77.48
$354.79K
Liu Liang Chiu-Chu Sara
2 Nov 2022
Director
Sell
44,000
$75.00
$3.30M
Liang Charles
2 Nov 2022
President and CEO
Sell indirect
44,000
$75.00
$3.30M
Liu Liang Chiu-Chu Sara
19 Apr 2022
Director
Sell
5,388
$42.00
$226.30K
Liang Charles
19 Apr 2022
President and CEO
Sell indirect
5,388
$42.00
$226.30K
Liu Liang Chiu-Chu Sara
30 Mar 2022
Director
Sell
5,328
$42.17
$224.68K
Liu Liang Chiu-Chu Sara
30 Mar 2022
Director
Sell
17,449
$41.54
$724.83K
Liu Liang Chiu-Chu Sara
30 Mar 2022
Director
Sell
16,835
$40.46
$681.14K
Liang Charles
30 Mar 2022
President and CEO
Sell indirect
5,328
$42.17
$224.68K
Liang Charles
30 Mar 2022
President and CEO
Sell indirect
17,449
$41.54
$724.83K
Liang Charles
30 Mar 2022
President and CEO
Sell indirect
16,835
$40.46
$681.14K
TUAN SHERMAN
5 Nov 2021
Director
Sell
2,697
$46.26
$124.76K
Liu Liang Chiu-Chu Sara
3 Nov 2021
Director
Sell
100
$43.64
$4.36K
Liu Liang Chiu-Chu Sara
3 Nov 2021
Director
Sell
3,030
$43.10
$130.61K
Showing 250 of 340 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 608
Amendments (4/A) skipped 10
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 17
Sales straight out of an exercise 203
Sales at will 94
Transactions with no price 0
Shares from compensation/vesting 10,836,968
Sales filed before the plan box existed 72
History held since 29 Aug 2016