BB Boundless Bio, Inc. Stock: price and management transactions · United States · SEC (Form 4) Follow the Boundless Bio, Inc. stock price and the full directors' dealings record of the company, a listed issuer based in United States. Shares are quoted on US US, under the authority of SEC (Form 4). Market capitalisation: €54.8m. The latest transaction was reported on 21 July 2026 (Acquisition). Among the most active insiders: TANG KEVIN. All data is free.
€465,281
22 ops.
Buy Volume
Buys €465,281 €70,030 Sells
This score ranks the purchase within its own market. No market currently meets the historical allocation criteria, so signals remain watch-only. Not investment advice.
Σ Sigma AI Analysis Fundamental view, insider signal, bull and bear case, synthesis.
Generate AI analysis AI-generated analysis. Opinion, not investment advice. Not backtested. Built from public filings and financials. No price target, no buy or sell recommendation.
Last declaration on 21 July 2026
All Executives32 Thresholds0 Prospectus0 Other0
Declarations 32 total
▲ 10% Owner · Executives · 17 Jul 2026
265 shares @ US$2.44 Common Stock SEC:0001178579-26-000017:0
Canonical exit: 15 Oct 2026 (T+90) ▲ 10% Owner · Executives · 20 Jul 2026
1,623 shares @ US$2.44 Common Stock SEC:0001178579-26-000017:1
Canonical exit: 18 Oct 2026 (T+90) ▲ 10% Owner · Executives · 21 Jul 2026
2,975 shares @ US$2.44 Common Stock SEC:0001178579-26-000017:2
Canonical exit: 19 Oct 2026 (T+90) ▲ 10% Owner · Executives · 15 Jul 2026
1,600 shares @ US$2.44 0.0070% mcap 0.8% of flow Common Stock SEC:0001178579-26-000015:1
Canonical exit: 13 Oct 2026 (T+90) ▲ 10% Owner · Executives · 14 Jul 2026
43,878 shares @ US$2.43 0.19% mcap 20.6% of flow Common Stock SEC:0001178579-26-000015:0
Canonical exit: 12 Oct 2026 (T+90) ▲ 10% Owner · Executives · 16 Jul 2026
18,491 shares @ US$2.44 0.081% mcap 8.6% of flow Common Stock SEC:0001178579-26-000015:2
Canonical exit: 14 Oct 2026 (T+90) ▲ 10% Owner · Executives · 9 Jul 2026
7 shares @ US$2.48 0.0000% mcap 0.0% of flow Common Stock SEC:0001178579-26-000011:0
Canonical exit: 7 Oct 2026 (T+90) ▲ 10% Owner · Executives · 10 Jul 2026
43,367 shares @ US$2.43 0.19% mcap 28.9% of flow Common Stock SEC:0001178579-26-000011:1
Canonical exit: 8 Oct 2026 (T+90) ▲ 10% Owner · Executives · 13 Jul 2026
48,211 shares @ US$2.42 0.22% mcap 32.1% of flow Common Stock SEC:0001178579-26-000011:2
Canonical exit: 11 Oct 2026 (T+90) ▲ 10% Owner · Executives · 6 Jul 2026
27,062 shares @ US$2.49 0.12% mcap 47.5% of flow Common Stock SEC:0001178579-26-000010:0
Canonical exit: 4 Oct 2026 (T+90) ▲ 10% Owner · Executives · 7 Jul 2026
15,810 shares @ US$2.48 0.070% mcap 27.6% of flow Common Stock SEC:0001178579-26-000010:1
Canonical exit: 5 Oct 2026 (T+90) ▲ 10% Owner · Executives · 8 Jul 2026
14,338 shares @ US$2.46 0.063% mcap 24.9% of flow Common Stock SEC:0001178579-26-000010:2
Canonical exit: 6 Oct 2026 (T+90) ◇ 10% Owner · Executives · 1 Jul 2026
16,000 shares @ US$1.03 0.030% mcap 29.3% of flow Common Stock SEC:0001012975-26-000621:0
▼ 10% Owner · Executives · 1 Jul 2026
16,000 shares @ US$2.49 0.071% mcap 70.7% of flow Common Stock SEC:0001012975-26-000621:1
◇ 10% Owner · Executives · 1 Jul 2026
16,000 shares @ US$1.03 0.030% mcap 29.3% of flow Common Stock SEC:0001012975-26-000622:0
▼ 10% Owner · Executives · 1 Jul 2026
16,000 shares @ US$2.49 0.071% mcap 70.7% of flow Common Stock SEC:0001012975-26-000622:1
▲ 10% Owner · Executives · 30 Jun 2026
25,930 shares Common Stock SEC:0001178579-26-000009:0
Canonical exit: 28 Sept 2026 (T+90) ▲ 10% Owner · Executives · 30 Jun 2026
100 shares Common Stock SEC:0001178579-26-000009:1
Canonical exit: 28 Sept 2026 (T+90) ▲ 10% Owner · Executives · 1 Jul 2026
71,612 shares Common Stock SEC:0001178579-26-000009:2
Canonical exit: 29 Sept 2026 (T+90) ▲ 10% Owner · Executives · 2 Jul 2026
9,821 shares Common Stock SEC:0001178579-26-000009:3
Canonical exit: 30 Sept 2026 (T+90) ▲ 10% Owner · Executives · 25 Jun 2026
145,880 shares Common Stock SEC:0001178579-26-000008:0
Canonical exit: 23 Sept 2026 (T+90) ▲ 10% Owner · Executives · 25 Jun 2026
510 shares Common Stock SEC:0001178579-26-000008:1
Canonical exit: 23 Sept 2026 (T+90) ▲ 10% Owner · Executives · 26 Jun 2026
75,047 shares Common Stock SEC:0001178579-26-000008:2
Canonical exit: 24 Sept 2026 (T+90) ▲ 10% Owner · Executives · 26 Jun 2026
134 shares Common Stock SEC:0001178579-26-000008:3
Canonical exit: 24 Sept 2026 (T+90) ▲ 10% Owner · Executives · 29 Jun 2026
63,985 shares Common Stock SEC:0001178579-26-000008:4
Canonical exit: 27 Sept 2026 (T+90) 25 of 32 declarations
Load more (7 remaining) About Boundless Bio, Inc. Boundless Bio, Inc. is a biopharmaceutical company focused on developing innovative treatments for cancer using advanced technologies. It is listed on NASDAQ under the ticker symbol XNAS.