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BOLD — structural market context

Boundless Bio, Inc.

Structural market context from public regulatory and market data, shown with its as-of dates. Descriptive only: nothing on this page is a recommendation, a prediction, or advice to buy or sell any security.

What changed

As of the close on Oct 21. Each line shows the earlier value, the later value and their dates.

Price

Close $2.44 (Oct 21) vs $2.43 (Oct 20): +0.41%.

Volume

0.30× its 20-session average (214K) on Oct 21.

Includes pre- and post-market trading.

Short interest

Short interest 778K shares (settlement Sep 30) vs 812K (Sep 15).

No new publication in this window. Latest: settlement Sep 30, published Oct 10.

Insider filings (Form 4)

None recorded in this window.

BOLD events and their magnitude

Latest SEC filing in the event study

Form 4 · purchase · filed 2026-10-20 · View on sec.gov ↗

…

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BOLD short interest & days to cover

SHARES SHORT
778K
% OF FLOAT
4.4%
DAYS TO COVER
4.3
CHANGE VS PRIOR
-4.1%

FINRA consolidated short interest, reported twice a month and published ~2 weeks after each settlement date. % of float uses reported free float. · as of 2026-09-30 (22d ago)

BOLD fails-to-deliver (FTD)

Settlement dateFailed sharesPrice
2026-08-31 · 52d1K$2.83
2026-08-06 · 77d3K$2.8
2026-07-27 · 87d11$2.57

SEC fails-to-deliver files, published twice a month with ~6 weeks of delay.

BOLD insider buying and selling (Form 4)

Last 12 months, Form 4 codes P and S: 4 purchases · 1 sale

InsiderTypeSharesValueFiled
TANG KEVIN · 10 percent ownerPurchase (P)118K$277K2026-10-20
TANG KEVIN · 10 percent ownerPurchase (P)13K$30K2026-10-20
TANG KEVIN · 10 percent ownerPurchase (P)18K$43K2026-10-20
TANG KEVIN · 10 percent ownerPurchase (P)220$5212026-10-20
TANG KEVIN · 10 percent ownerSale (S)18K$54K2026-08-28

SEC Form 4 filings: purchases and sales reported on Form 4 (transaction codes P and S) only; grants and option exercises excluded. Attributed public records.

Frequently asked questions

What is BOLD's short interest?
As of the FINRA settlement date 2026-09-30, BOLD had 778K shares sold short — 4.4% of its float, with 4.3 days to cover at average volume. FINRA publishes this data roughly two weeks after each twice-monthly settlement, so it is inherently delayed. A short-interest figure describes an aggregate position; it does not predict what the stock will do.
Are insiders buying BOLD?
In the last 12 months of SEC Form 4 filings, BOLD recorded 4 insider purchases and 1 sale reported on Form 4 (transaction codes P and S; grants and option exercises excluded). These are attributed public records — information, not instruction.
Is this page telling me to buy or sell BOLD?
No. Everything on this page is descriptive, structural market context from public data, shown with its as-of dates. TradeAI News does not issue directional recommendations, price predictions, or buy/sell advice — for any ticker.
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BOLD: the full history

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Not financial advice. Trading involves risk. Descriptive structural context, never a recommendation.