MUNIZ THOMAS PAUL (Chief Operating Officer) sold 8.5% of their position (136.58K shares) of ARCHER AVIATION INC. on the open market

Open‑market sale worth $817.9K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales

MUNIZ THOMAS PAUL

Filed: 5/20/2026ACC: 0001882348-26-000014

InsiderMUNIZ THOMAS PAULCIK 1882348

→

IssuerARCHER AVIATION INC.CIK 1824502

Officer· Chief Operating Officer

Since Sep 2021

-136.58K

Net shares

Net seller

$817.9K

Total sold

Open market trades

0B · 2S

Total transactions

168.03K acquired · 304.61K disposed

Non-Derivative Transactions6

Class A Common Stock

Direct

M · Option Exercise

+143.75K

Price / share

—

Trade value

—

% of position

10.0%

5/15/2026

1.43M→1.57M

Class A Common Stock

Direct

M · Option Exercise

+8.95K

Price / share

—

Trade value

—

% of position

0.6%

5/15/2026

1.57M→1.58M

Class A Common Stock

Direct

M · Option Exercise

+7.61K

Price / share

—

Trade value

—

% of position

0.5%

5/15/2026

1.58M→1.59M

Class A Common Stock

Direct

M · Option Exercise

+7.72K

Price / share

—

Trade value

—

% of position

0.5%

5/15/2026

1.59M→1.60M

Class A Common Stock

Direct

S · Sale

−44.74K

Price / share

$6.06

Trade value

$271.17K

% of position

2.8%

5/15/2026

1.60M→1.55M

Class A Common Stock

Direct

S · Sale

−91.84K

Price / share

$5.95

Trade value

$546.69K

% of position

5.9%

5/18/2026

1.55M→1.46M

Total

Net shares

+31.45K

Net value

-$817.86K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	5/15/2026	M · Option Exercise	+143.75K	—	—	10.0%	1.43M	1.57M
Class A Common Stock Direct	5/15/2026	M · Option Exercise	+8.95K	—	—	0.6%	1.57M	1.58M
Class A Common Stock Direct	5/15/2026	M · Option Exercise	+7.61K	—	—	0.5%	1.58M	1.59M
Class A Common Stock Direct	5/15/2026	M · Option Exercise	+7.72K	—	—	0.5%	1.59M	1.60M
Class A Common Stock Direct	5/15/2026	S · Sale	−44.74K	$6.06	$271.17K	2.8%	1.60M	1.55M
Class A Common Stock Direct	5/18/2026	S · Sale	−91.84K	$5.95	$546.69K	5.9%	1.55M	1.46M
Total			+31.45K		-$817.86K

Derivative Transactions4

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

143.75K shares

−143.75K

Strike price

Held after

575K

Exercisable

—

5/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

8.95K shares

−8.95K

Strike price

Held after

62.62K

Exercisable

—

5/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

7.61K shares

−7.61K

Strike price

Held after

45.67K

Exercisable

—

5/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

7.72K shares

−7.72K

Strike price

Held after

77.18K

Exercisable

—

5/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Class A Common Stock143.75K shares	5/15/2026	M · Option Exercise	−143.75K	—	575K
Restricted Stock Units Direct	Class A Common Stock8.95K shares	5/15/2026	M · Option Exercise	−8.95K	—	62.62K
Restricted Stock Units Direct	Class A Common Stock7.61K shares	5/15/2026	M · Option Exercise	−7.61K	—	45.67K
Restricted Stock Units Direct	Class A Common Stock7.72K shares	5/15/2026	M · Option Exercise	−7.72K	—	77.18K