→ Amentum Holdings, Inc. AMTM

Stake: — Shares: — Class: COMM

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

1 transaction

0 buys · 0 sales · 1 awards/exercises

Issuer Cluster

1 13D/G filings on this issuer

0 other filings besides this one

Filer Track Record

5 filings by this filer

4 other filings in the data moat

Short Interest · settle 2026-09-30

DTC 6.79

12,329,527 shares short · +0.8% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

2 holders · $23.33M

Point72 Asset MgmtSoros Fund Management

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-08-14	Thompson Christopher M.T.	director	Gift	4,250	—	—

Other Filings by PRIMECAP MANAGEMENT CO/CA/

Filed	Form	Issuer	Stake	Shares
2018-01-05	SC	Flex Pharma, Inc. DCOY	—	—	view →
2018-01-04	SC	Alkermes plc. ALKS	—	—	view →
2018-01-04	SC	Flex Pharma, Inc. DCOY	—	—	view →
2018-01-04	SC	AXCELIS TECHNOLOGIES INC ACLS	—	—	view →

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