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CIK 0001782303 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company

Boundless Bio, Inc.

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Ticker
BOLD
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
830751369
Phone
(858) 766-9912
Business address
11099 NORTH TORREY PINES ROAD, SUITE 150, LA JOLLA, CA, 92037
Open-market buys, last 90 days
$458,375
in 5 filings
Open-market sales, last 90 days
$54,351
in 1 filing

Net +$404,024. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. TANG KEVIN +$404K 10% owner sold <1% of stake
Date Insider Transaction Shares Price Value Owned after
2024-08-19 Oien Jessica See Remarks Grant or award · Stock Option +29,148 29,148
2024-08-19 Oien Jessica See Remarks Grant or award · Stock Option +10,200 10,200
2024-08-19 Oien Jessica See Remarks Grant or award · Stock Option +42,051 42,051
2024-08-19 Oien Jessica See Remarks Grant or award · Stock Option +35,897 35,897
2024-08-19 Oien Jessica See Remarks Grant or award · Stock Option +26,090 26,090
2024-08-19 Oien Jessica See Remarks Grant or award · Stock Option +16,234 16,234
2024-08-19 Hornby Zachary President & CEO Returned to the company · Stock Option −256,410 0
2024-08-19 Hornby Zachary President & CEO Returned to the company · Stock Option −471,282 0
2024-08-19 Hornby Zachary President & CEO Returned to the company · Stock Option −257,207 0
2024-08-19 Hornby Zachary President & CEO Returned to the company · Stock Option −162,343 0
2024-08-19 Hornby Zachary President & CEO Grant or award · Stock Option +256,410 256,410
2024-08-19 Hornby Zachary President & CEO Grant or award · Stock Option +471,282 471,282
2024-08-19 Hornby Zachary President & CEO Grant or award · Stock Option +257,207 257,207
2024-08-19 Hornby Zachary President & CEO Grant or award · Stock Option +162,343 162,343
2024-08-19 Abdollahian Neil Chief Business Officer Returned to the company · Stock Option −82,051 0
2024-08-19 Abdollahian Neil Chief Business Officer Returned to the company · Stock Option −19,948 0
2024-08-19 Abdollahian Neil Chief Business Officer Returned to the company · Stock Option −54,871 0
2024-08-19 Abdollahian Neil Chief Business Officer Returned to the company · Stock Option −36,852 0
2024-08-19 Abdollahian Neil Chief Business Officer Returned to the company · Stock Option −23,191 0
2024-08-19 Abdollahian Neil Chief Business Officer Grant or award · Stock Option +82,051 82,051

Page 5 of 10 · 185 trades