Arkolith/Insider Trading/ETNB/Form 4

Martins Ryan

Chief Financial Officer89bio, Inc. (ETNB) · full profile →Form 4 · filed Oct 30, 2025
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
8
2 non-derivative · 6 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Oct 30, 2025Tender(U)374K——0
Oct 30, 2025Grant(A)35K—$0374K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Oct 30, 2025Disposed to issuer(D)300K—$00
Oct 30, 2025Disposed to issuer(D)175K—$00
Oct 30, 2025Disposed to issuer(D)110K—$00
Oct 30, 2025Disposed to issuer(D)48K—$00
Oct 30, 2025Disposed to issuer(D)58K—$00
Oct 30, 2025Disposed to issuer(D)48K—$00

Transaction Codes

U
See SEC Form 4 code table
A
Grant / award
D
Disposition to the issuer

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-25-259059) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML