[Form 4] ScanTech AI Systems Inc. Common stock Insider Trading Activity

Rhea-AI Filing Summary

Form 4 filed on 31 Jul 2025 discloses that Seaport Global Asset Management LLC ("SGAM"), a 10% owner of ScanTech AI Systems Inc. (STAI), sold a total of 115,000 common shares over two consecutive trading days:

• 29 Jul 2025: 5,000 shares sold at $1.01
• 30 Jul 2025: 110,000 shares sold at $0.948

Following the dispositions, SGAM reports 16,542,973 shares held indirectly through Seaport Group SIBS LLC. No derivative transactions or new acquisitions were reported.

The transactions reflect a 0.7% reduction in the reporting person’s previously disclosed stake and could signal limited profit-taking rather than a strategic exit.

Positive

• None.

Negative

• 10% owner SGAM sold 115,000 STAI shares, decreasing its stake to 16.54 m shares and signaling slight insider selling pressure.

Insights

Financial Analyst

TL;DR: Minor insider sale (0.7% of stake) at ~$1; modestly negative signal, unlikely to shift valuation.

The disposal of 115k shares by SGAM trims its position to 16.54 m shares. The dollar value (≈$109k) is small relative to the holding and provides limited insight into future fundamentals. Absence of derivative activity or larger block sales suggests routine portfolio management. Market impact should be minimal, yet insider selling by a 10% owner typically acts as a mild sentiment headwind.

Portfolio Manager

TL;DR: Transaction size insignificant versus position; I view it as neutral for portfolio decisions.

Liquidity events like this, involving <1% of ownership, rarely alter supply-demand dynamics. Without accompanying corporate news, I classify the filing as not impactful. I will monitor for follow-on sales that might indicate a pattern but see no reason to adjust weighting today.

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
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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)
07/29/2025

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	07/29/2025		S		5,000	D	$1.01	16,652,973	I	See footnote(1)
Common Stock, par value $0.0001 per share	07/30/2025		S		110,000	D	$0.948	16,542,973	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	07/31/2025
	** Signature of Reporting Person	Date
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