Public ownership evidence

SeaStar Medical Holding Corporation Common Stock (ICU) Ownership Disclosures

Read ICU insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

SeaStar Medical Holding Corporation Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-08-20
Trade date
2026-08-18
Reporting owners
Messinger Michael
Code
P
Shares
750
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001437749-26-028540
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read ICU fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read ICU fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-08-202026-08-18Messinger MichaelP750Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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OSAIC HOLDINGS, INC.2026-06-302026-08-15195$714None
JANE STREET GROUP, LLC2026-06-302026-08-153,362$12,339None
JANE STREET GROUP, LLC2026-06-302026-08-159,272$34,028None
BARCLAYS PLC2026-06-302026-08-154$15None
VANGUARD CAPITAL MANAGEMENT LLC2026-06-302026-08-1433,091$121,444None
Vanguard Global Advisers, LLC2026-06-302026-08-14165$606None
UBS Group AG2026-06-302026-08-1431,398$115,231None
VANGUARD FIDUCIARY TRUST CO2026-06-302026-08-1413,692$50,250None
NORTHERN TRUST CORP2026-06-302026-08-1410,402$38,175None
HighMark Wealth Management LLC2026-06-302026-08-132$7None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-138,656$31,767None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-1340,937$150,243None
NewEdge Advisors, LLC2026-06-302026-08-13176$647None
Tower Research Capital LLC (TRC)2026-06-302026-08-121,356$4,977None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-121$4None
BlackRock, Inc.2026-06-302026-08-08913$3,351None
PNC Financial Services Group, Inc.2026-06-302026-08-084,943$18,141None
Caitong International Asset Management Co., Ltd2026-06-302026-08-062$7None
TD Waterhouse Canada Inc.2026-06-302026-07-2822$106None
SBI Securities Co., Ltd.2026-06-302026-07-2414$51None
SOA Wealth Advisors, LLC.2026-06-302026-07-226$22None

90-day public filing window, up to 50 source positions.

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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