LENTELL ERIC (Chief Legal & Strategy Officer) sold 22.2% of their position (52.76K shares) of ARCHER AVIATION INC. on the open market

Open‑market sale worth $338.4K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

LENTELL ERIC

Filed: 8/19/2026ACC: 0002016416-26-000020

InsiderLENTELL ERICCIK 2016416

→

IssuerARCHER AVIATION INC.CIK 1824502

Officer· Chief Legal & Strategy Officer

Since Mar 2026

-52.76K

Net shares

Net seller

$338.4K

Total sold

Open market trades

0B · 1S

Total transactions

100.44K acquired · 153.21K disposed

Non-Derivative Transactions7

Class A Common Stock

Direct

M · Option Exercise

+22.87K

Price / share

—

Trade value

—

% of position

16.7%

8/15/2026

137.33K→160.20K

Class A Common Stock

Direct

M · Option Exercise

+19.80K

Price / share

—

Trade value

—

% of position

12.4%

8/15/2026

160.20K→179.99K

Class A Common Stock

Direct

M · Option Exercise

+8.95K

Price / share

—

Trade value

—

% of position

5.0%

8/15/2026

179.99K→188.94K

Class A Common Stock

Direct

M · Option Exercise

+26.10K

Price / share

—

Trade value

—

% of position

13.8%

8/15/2026

188.94K→215.03K

Class A Common Stock

Direct

M · Option Exercise

+15.44K

Price / share

—

Trade value

—

% of position

7.2%

8/15/2026

215.03K→230.47K

Class A Common Stock

Direct

M · Option Exercise

+7.30K

Price / share

—

Trade value

—

% of position

3.2%

8/15/2026

230.47K→237.77K

Class A Common Stock

Direct

S · Sale

−52.76K

Price / share

$6.41

Trade value

$338.35K

% of position

22.2%

8/17/2026

237.77K→185.01K

Total

Net shares

+47.68K

Net value

-$338.35K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	8/15/2026	M · Option Exercise	+22.87K	—	—	16.7%	137.33K	160.20K
Class A Common Stock Direct	8/15/2026	M · Option Exercise	+19.80K	—	—	12.4%	160.20K	179.99K
Class A Common Stock Direct	8/15/2026	M · Option Exercise	+8.95K	—	—	5.0%	179.99K	188.94K
Class A Common Stock Direct	8/15/2026	M · Option Exercise	+26.10K	—	—	13.8%	188.94K	215.03K
Class A Common Stock Direct	8/15/2026	M · Option Exercise	+15.44K	—	—	7.2%	215.03K	230.47K
Class A Common Stock Direct	8/15/2026	M · Option Exercise	+7.30K	—	—	3.2%	230.47K	237.77K
Class A Common Stock Direct	8/17/2026	S · Sale	−52.76K	$6.41	$338.35K	22.2%	237.77K	185.01K
Total			+47.68K		-$338.35K

Derivative Transactions6

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

22.87K shares

−22.87K

Strike price

Held after

0.00

Exercisable

—

8/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

19.80K shares

−19.80K

Strike price

Held after

39.59K

Exercisable

—

8/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

8.95K shares

−8.95K

Strike price

Held after

53.67K

Exercisable

—

8/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

26.10K shares

−26.10K

Strike price

Held after

130.48K

Exercisable

—

8/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

15.44K shares

−15.44K

Strike price

Held after

138.93K

Exercisable

—

8/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

7.30K shares

−7.30K

Strike price

Held after

73.02K

Exercisable

—

8/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Class A Common Stock22.87K shares	8/15/2026	M · Option Exercise	−22.87K	—	0.00
Restricted Stock Units Direct	Class A Common Stock19.80K shares	8/15/2026	M · Option Exercise	−19.80K	—	39.59K
Restricted Stock Units Direct	Class A Common Stock8.95K shares	8/15/2026	M · Option Exercise	−8.95K	—	53.67K
Restricted Stock Units Direct	Class A Common Stock26.10K shares	8/15/2026	M · Option Exercise	−26.10K	—	130.48K
Restricted Stock Units Direct	Class A Common Stock15.44K shares	8/15/2026	M · Option Exercise	−15.44K	—	138.93K
Restricted Stock Units Direct	Class A Common Stock7.30K shares	8/15/2026	M · Option Exercise	−7.30K	—	73.02K