SMCISuper Micro Computer, Inc.

Insider trades (Form 4)

Directors, top managers and anyone owning more than 10% of a company must report every time they buy, sell or receive its shares, within two business days, on a Form 4. Here is what Super Micro Computer's insiders did over the last year, and what each kind of trade means.

Bought on the open market$00 trades by 0 people

Sold on the open market$24.4M8 trades by 2 people

Sales that were planned ahead100%made under a pre-set trading plan (Rule 10b5-1)

Filings read30the newest 30 of 92 in the last year

Buying and selling, month by month

Open-market trades only, by value. Tap a month.

DecJanFebMarAprMayJunJulAugSepOctNov

■ above the line: bought · ■ below: sold

Who traded

Person and role	Bought	Sold	Shares held after
Liang Chiu-Chu Sara LiuDirector · Owns over 10%	–	$12.2M	337.5K
Charles LiangChief executive (President and CEO) · Director · Owns over 10%	–	$12.2M	337.5K
Jin XiaoSr. Corporate VP, Engineering	–	–	196.0K
David E WeigandChief financial officer (SVP, Chief Financial Officer)	–	–	138.0K
Matthew ThaubergerChief Revenue Officer	–	–	7.6K
Vikranth MalyalaSVP, Chief Business Officer	–	–	50.9K
Kenneth CheungChief accountant (SVP, Chief Accounting Officer)	–	–	64.6K

Every trade (67)

Oct 27, 2026Received shares or options as payLiang Chiu-Chu Sara Liu · Director · Owns over 10%A grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+10,000 unitsno price (not a sale)owns 10,000 after
Oct 27, 2026Received shares or options as payLiang Chiu-Chu Sara Liu · Director · Owns over 10%A grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+5,453 unitsno price (not a sale)owns 15,453 after
Oct 27, 2026Received shares or options as payHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%A grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+10,000 unitsno price (not a sale)owns 10,000 after
Oct 27, 2026Received shares or options as payHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%A grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+5,453 unitsno price (not a sale)owns 15,453 after
Oct 27, 2026Received shares or options as payKenneth Cheung · Chief accountant (SVP, Chief Accounting Officer)A grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+6,000 unitsno price (not a sale)owns 6,000 after
Oct 27, 2026Received shares or options as payJin Xiao · Sr. Corporate VP, EngineeringA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+9,000 unitsno price (not a sale)owns 9,000 after
Oct 27, 2026Received shares or options as payMatthew Thauberger · Chief Revenue OfficerA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+10,000 unitsno price (not a sale)owns 10,000 after
Oct 27, 2026Received shares or options as payVikranth Malyala · SVP, Chief Business OfficerA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+14,000 unitsno price (not a sale)owns 14,000 after
Oct 7, 2026Sold shares on the open marketPlanned aheadLiang Chiu-Chu Sara Liu · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−100,000 sharesat $45.02 = $4.5Mowns 337,506 after
Oct 7, 2026Sold shares on the open marketPlanned aheadHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−100,000 sharesat $45.02 = $4.5Mowns 337,506 after
Sep 4, 2026Sold shares on the open marketPlanned aheadHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−100,000 sharesat $40.00 = $4.0Mowns 437,506 after
Sep 4, 2026Sold shares on the open marketPlanned aheadLiang Chiu-Chu Sara Liu · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−100,000 sharesat $40.00 = $4.0Mowns 437,506 after
Sep 3, 2026Sold shares on the open marketPlanned aheadHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−42,565 sharesat $36.60 = $1.6Mowns 594,941 after
Sep 3, 2026Sold shares on the open marketPlanned aheadHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−57,435 sharesat $37.62 = $2.2Mowns 537,506 after
Sep 3, 2026Sold shares on the open marketPlanned aheadLiang Chiu-Chu Sara Liu · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−42,565 sharesat $36.60 = $1.6Mowns 594,941 after
Sep 3, 2026Sold shares on the open marketPlanned aheadLiang Chiu-Chu Sara Liu · Director · Owns over 10%Insiders sell for many reasons: paying taxes, buying a house, spreading their savings. Many sales are planned months ahead. Form 4−57,435 sharesat $37.62 = $2.2Mowns 537,506 after
Aug 27, 2026Received shares or options as payDavid E Weigand · Chief financial officer (SVP, Chief Financial Officer)A grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+24,093 unitsno price (not a sale)owns 24,093 after
Aug 27, 2026Received shares or options as payVikranth Malyala · SVP, Chief Business OfficerA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+8,060 unitsno price (not a sale)owns 8,060 after
Aug 27, 2026Received shares or options as payJin Xiao · Sr. Corporate VP, EngineeringA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+2,112 unitsno price (not a sale)owns 2,112 after
Aug 17, 2026Turned options or share units into sharesJin Xiao · Sr. Corporate VP, EngineeringSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+4,000 sharesno price (not a sale)owns 196,022 after
Aug 17, 2026Shares kept back to pay taxJin Xiao · Sr. Corporate VP, EngineeringWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−1,436 sharesat $38.28 = $55.0Kowns 194,586 after
Aug 17, 2026Turned options or share units into sharesJin Xiao · Sr. Corporate VP, EngineeringSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−4,000 unitsno price (not a sale)
Aug 17, 2026Turned options or share units into sharesDavid E Weigand · Chief financial officer (SVP, Chief Financial Officer)Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+6,500 sharesno price (not a sale)owns 138,038 after
Aug 17, 2026Shares kept back to pay taxDavid E Weigand · Chief financial officer (SVP, Chief Financial Officer)When share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−3,308 sharesat $38.28 = $126.6Kowns 134,730 after
Aug 17, 2026Turned options or share units into sharesDavid E Weigand · Chief financial officer (SVP, Chief Financial Officer)Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−6,500 unitsno price (not a sale)
Aug 17, 2026Turned options or share units into sharesMatthew Thauberger · Chief Revenue OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+2,250 sharesno price (not a sale)owns 7,632 after
Aug 17, 2026Shares kept back to pay taxMatthew Thauberger · Chief Revenue OfficerWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−1,145 sharesat $38.28 = $43.8Kowns 6,487 after
Aug 17, 2026Turned options or share units into sharesMatthew Thauberger · Chief Revenue OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−2,250 unitsno price (not a sale)
Aug 17, 2026Turned options or share units into sharesVikranth Malyala · SVP, Chief Business OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+6,000 sharesno price (not a sale)owns 50,930 after
Aug 17, 2026Shares kept back to pay taxVikranth Malyala · SVP, Chief Business OfficerWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−3,053 sharesat $38.28 = $116.9Kowns 47,877 after
Aug 17, 2026Turned options or share units into sharesVikranth Malyala · SVP, Chief Business OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−6,000 unitsno price (not a sale)
Aug 17, 2026Turned options or share units into sharesHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+3,650 sharesno price (not a sale)owns 639,476 after
Aug 17, 2026Shares kept back to pay taxHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%When share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−1,970 sharesat $38.28 = $75.4Kowns 637,506 after
Aug 17, 2026Turned options or share units into sharesHeld indirectly (trust, family…)Charles Liang · Chief executive (President and CEO) · Director · Owns over 10%Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−3,650 unitsno price (not a sale)
Aug 17, 2026Turned options or share units into sharesLiang Chiu-Chu Sara Liu · Director · Owns over 10%Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+3,650 sharesno price (not a sale)owns 639,476 after
Aug 17, 2026Shares kept back to pay taxLiang Chiu-Chu Sara Liu · Director · Owns over 10%When share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−1,970 sharesat $38.28 = $75.4Kowns 637,506 after
Aug 17, 2026Turned options or share units into sharesLiang Chiu-Chu Sara Liu · Director · Owns over 10%Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−3,650 unitsno price (not a sale)
Aug 17, 2026Turned options or share units into sharesKenneth Cheung · Chief accountant (SVP, Chief Accounting Officer)Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+2,250 sharesno price (not a sale)owns 64,580 after
Aug 17, 2026Shares kept back to pay taxKenneth Cheung · Chief accountant (SVP, Chief Accounting Officer)When share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−808 sharesat $38.28 = $30.9Kowns 63,772 after
Aug 17, 2026Turned options or share units into sharesKenneth Cheung · Chief accountant (SVP, Chief Accounting Officer)Swapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−2,250 unitsno price (not a sale)
Aug 14, 2026Received shares or options as payMatthew Thauberger · Chief Revenue OfficerA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+9,872 unitsno price (not a sale)owns 9,872 after
Aug 14, 2026Received shares or options as payMatthew Thauberger · Chief Revenue OfficerA grant from the company as part of their pay, not a purchase. (Employee Stock Option (right to buy)) Form 4+21,938 unitsno price (not a sale)owns 39,938 after
Aug 14, 2026Received shares or options as payTally C Liu · DirectorA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+3,941 unitsno price (not a sale)owns 3,941 after
Aug 14, 2026Received shares or options as payTally C Liu · DirectorA grant from the company as part of their pay, not a purchase. (Stock Option (right to buy)) Form 4+5,062 unitsno price (not a sale)owns 5,062 after
Aug 14, 2026Received shares or options as paySherman Tuan · DirectorA grant from the company as part of their pay, not a purchase. (Stock Option (right to buy)) Form 4+10,125 unitsno price (not a sale)owns 10,125 after
Aug 14, 2026Received shares or options as payRobert L Blair · DirectorA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+7,882 unitsno price (not a sale)owns 7,882 after
Aug 14, 2026Received shares or options as paySusan Mogensen · DirectorA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+7,882 unitsno price (not a sale)owns 7,882 after
Aug 14, 2026Received shares or options as payJudy L. Lin · DirectorA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+7,882 unitsno price (not a sale)owns 7,882 after
Aug 14, 2026Received shares or options as payScott Angel · DirectorA grant from the company as part of their pay, not a purchase. (Restricted Stock Units) Form 4+7,882 unitsno price (not a sale)owns 7,882 after
Aug 10, 2026Turned options or share units into sharesMatthew Thauberger · Chief Revenue OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+740 sharesno price (not a sale)owns 5,548 after
Aug 10, 2026Shares kept back to pay taxMatthew Thauberger · Chief Revenue OfficerWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−377 sharesat $31.46 = $11.9Kowns 5,171 after
Aug 10, 2026Turned options or share units into sharesMatthew Thauberger · Chief Revenue OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+430 sharesno price (not a sale)owns 5,601 after
Aug 10, 2026Shares kept back to pay taxMatthew Thauberger · Chief Revenue OfficerWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−219 sharesat $31.46 = $6.9Kowns 5,382 after
Aug 10, 2026Turned options or share units into sharesMatthew Thauberger · Chief Revenue OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−740 unitsno price (not a sale)
Aug 10, 2026Turned options or share units into sharesMatthew Thauberger · Chief Revenue OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−430 unitsno price (not a sale)owns 3,420 after
Aug 10, 2026Turned options or share units into sharesVikranth Malyala · SVP, Chief Business OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+2,110 sharesno price (not a sale)owns 45,446 after
Aug 10, 2026Shares kept back to pay taxVikranth Malyala · SVP, Chief Business OfficerWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−1,074 sharesat $31.46 = $33.8Kowns 44,372 after
Aug 10, 2026Turned options or share units into sharesVikranth Malyala · SVP, Chief Business OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+1,138 sharesno price (not a sale)owns 45,510 after
Aug 10, 2026Shares kept back to pay taxVikranth Malyala · SVP, Chief Business OfficerWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−580 sharesat $31.46 = $18.2Kowns 44,930 after
Aug 10, 2026Turned options or share units into sharesVikranth Malyala · SVP, Chief Business OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−2,110 unitsno price (not a sale)owns 6,340 after
Aug 10, 2026Turned options or share units into sharesVikranth Malyala · SVP, Chief Business OfficerSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−1,138 unitsno price (not a sale)owns 12,523 after
Aug 10, 2026Turned options or share units into sharesJin Xiao · Sr. Corporate VP, EngineeringSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+1,970 sharesno price (not a sale)owns 192,073 after
Aug 10, 2026Shares kept back to pay taxJin Xiao · Sr. Corporate VP, EngineeringWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−707 sharesat $31.46 = $22.2Kowns 191,366 after
Aug 10, 2026Turned options or share units into sharesJin Xiao · Sr. Corporate VP, EngineeringSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. Form 4+1,024 sharesno price (not a sale)owns 192,390 after
Aug 10, 2026Shares kept back to pay taxJin Xiao · Sr. Corporate VP, EngineeringWhen share pay vests, the company keeps some shares to cover the tax bill. Not a decision to sell. Form 4−368 sharesat $31.46 = $11.6Kowns 192,022 after
Aug 10, 2026Turned options or share units into sharesJin Xiao · Sr. Corporate VP, EngineeringSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−1,970 unitsno price (not a sale)owns 5,910 after
Aug 10, 2026Turned options or share units into sharesJin Xiao · Sr. Corporate VP, EngineeringSwapping options or units they already had for actual shares. Often followed by a sale or tax withholding. (Restricted Stock Units) Form 4−1,024 unitsno price (not a sale)owns 11,270 after

Read straight from the Form 4 filings Super Micro Computer's directors, top managers and large owners sent to the SEC. Insiders sell for many reasons: taxes, diversifying, planned sales. Buying with their own money is rarer. None of this says whether to buy or sell the shares.

Finding insider trades…Reading each Form 4…Adding them up…

Who traded

Person and role	Bought	Sold	Shares held after
Liang Chiu-Chu Sara LiuDirector · Owns over 10%	–	$12.2M	337.5K
Charles LiangChief executive (President and CEO) · Director · Owns over 10%	–	$12.2M	337.5K
Jin XiaoSr. Corporate VP, Engineering	–	–	196.0K
David E WeigandChief financial officer (SVP, Chief Financial Officer)	–	–	138.0K
Matthew ThaubergerChief Revenue Officer	–	–	7.6K
Vikranth MalyalaSVP, Chief Business Officer	–	–	50.9K
Kenneth CheungChief accountant (SVP, Chief Accounting Officer)	–	–	64.6K