STAI Form 4: 143,628 shares sold at $0.6616–$0.6949; 16.16M held

ScanTech AI Systems Inc. (STAI) — Form 4 insider transaction A reporting person sold common stock in two open-market transactions.

Rhea-AI Filing Summary

ScanTech AI Systems Inc. (STAI) — Form 4 insider transaction

A reporting person sold common stock in two open-market transactions. On 10/27/2025, 133,628 shares were sold at $0.6949. On 10/28/2025, 10,000 shares were sold at $0.6616. Following these transactions, 16,159,345 shares were beneficially owned on an indirect basis.

According to a footnote, the shares are held by Seaport Group SIBS LLC, which is managed by Seaport Global Asset Management LLC; Stephen C. Smith is the manager of Seaport Global Asset Management LLC.

Insights

Equity Markets Analyst

Routine Form 4 showing modest insider sales; neutral signal.

The filing lists two sales totaling 143,628 shares at prices between $0.6616 and $0.6949 on 10/27/2025 and 10/28/2025. Post-trade beneficial ownership stands at 16,159,345 shares, held indirectly.

These disclosures document activity without indicating strategy or future intent. The footnote clarifies that holdings are through Seaport Group SIBS LLC, managed by Seaport Global Asset Management LLC, with Stephen C. Smith as manager.

Further context, such as additional transactions or updated positions, would appear in subsequent filings if any occur.

Insider Trade Summary

Net Seller: 143,628 shares

Net Sell 2 txns

Insider SEAPORT GLOBAL ASSET MANAGEMENT LLC

Role 10% Owner

Sold 143,628 shs ($99K)

Type	Security	Shares	Price	Value
Sale	Common Stock, par value $0.0001 per share	10,000	$0.6616	$7K
Sale	Common Stock, par value $0.0001 per share	133,628	$0.6949	$93K

Holdings After Transaction: Common Stock, par value $0.0001 per share — 16,159,345 shares (Indirect, See footnote)

Footnotes (1)

1. F1. Shares held directly by Seaport Group SIBS LLC ("SIBS"). SIBS is managed by Seaport Global Asset Management LLC ("SGAM"). Stephen C. Smith is the manager of SGAM.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did STAI’s Form 4 disclose?

Two sales of common stock: 133,628 shares at $0.6949 on 10/27/2025 and 10,000 shares at $0.6616 on 10/28/2025.

How many STAI shares are beneficially owned after the transactions?

16,159,345 shares were beneficially owned following the reported transactions.

Were the STAI shares held directly or indirectly?

The filing shows indirect ownership, with holdings through Seaport Group SIBS LLC.

Who manages the entity holding the STAI shares?

Seaport Group SIBS LLC is managed by Seaport Global Asset Management LLC.

Who signed the Form 4 filing?

The filing was signed by Stephen C. Smith for Seaport Global Asset Management LLC.

What is the security involved in the transactions?

Common Stock, par value $0.0001 per share of ScanTech AI Systems Inc.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 10/29/2025 - 04:07 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SEAPORT GLOBAL ASSET MANAGEMENT LLC

(Last) (First) (Middle)

360 MADISON AVENUE

(Street)

NEW YORK NY 10017

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ScanTech AI Systems Inc. [ STAI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/27/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.0001 per share	10/27/2025		S		133,628	D	$0.6949	16,169,345	I	See footnote(1)
Common Stock, par value $0.0001 per share	10/28/2025		S		10,000	D	$0.6616	16,159,345	I	See footnote(1)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares held directly by Seaport Group SIBS LLC ("SIBS"). SIBS is managed by Seaport Global Asset Management LLC ("SGAM"). Stephen C. Smith is the manager of SGAM.

	/s/ Stephen C. Smith - for Seaport Global Asset Management LLC, By: Stephen C. Smith, Authorized Signatory	10/29/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.