SEC Filing Analysis: Phathom Pharmaceuticals, Inc. (PHAT)

Executive Summary

• Trading Significance: Low
• Key Takeaway: The Principal Accounting Officer sold a small number of shares in a non-discretionary transaction to cover tax liabilities from vested restricted stock units.
• Market Impact: Negligible. This type of transaction is common and does not typically influence market sentiment or stock price.

Company Information

Field	Value
Company	Phathom Pharmaceuticals, Inc.
Ticker Symbol	PHAT
CIK	0001783183
Industry	Pharmaceutical Preparations

Insider Information

Field	Value
Name	Breedlove Robert Charles
CIK	0002066645
Title/Position	Principal Accounting Officer
Relationship	Officer

Transaction Details

Field	Value
Form Type	4
Transaction Date	2025-11-03
Transaction Code	S (Sale)
Security Type	Common Stock
Shares Involved	524
Price Per Share	$13.51
Total Value	$7,079.24
Shares Owned After	47,407 (Directly)
Ownership Type	Direct

Financial Impact Assessment

Transaction Materiality

Metric	Value
Transaction Value	$7,079.24
% of Market Cap	0.0007%
Shares Transacted	524
% of Shares Outstanding	0.0007%
Post-Transaction Ownership	54,352 shares (0.077% of outstanding, including indirect holdings)
Materiality Assessment	Low

Impact Evaluation

• Market Cap Context: Phathom Pharmaceuticals has a market cap of approximately $0.96 billion. This $7k transaction is financially immaterial to the company and the insider's overall holdings.
• Transaction Significance: The sale is classified as a 'sell-to-cover' to satisfy tax withholding obligations, as noted in the filing's footnote. These are automated, non-discretionary sales and do not reflect an insider's voluntary decision to reduce their stake in the company. Given the small size and automated nature, the transaction holds no analytical significance.

Additional Context

Transaction Notes

• Special Circumstances: The filing footnote explicitly states, "Represents shares sold to satisfy tax withholding obligations upon the settlement of restricted stock units." This confirms the non-discretionary nature of the sale.