BOLD insider buying
Every open-market purchase of Boundless Bio, Inc. (BOLD) stock by its officers, directors and major shareholders, from SEC Form 4 filings.
Bought, last 12 months$1.94M
Insiders buying (12m)1
Purchases on record9
Last purchase filedOct 29, 2026
In the last 12 months, 1 insider of Boundless Bio, Inc. bought $1.94M of BOLD stock on the open market in 9 reported purchases. The most recent was filed on Oct 29, 2026: Tang Kevin +1 (10% Owner) bought 10,707 shares at $2.40, worth $25.70K. The largest purchase on record here is $714.77K by Tang Kevin +1 on Jun 25, 2026.
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| Filed | Insider | Value | Shares | Price | Stake | Trade | |
|---|---|---|---|---|---|---|---|
| Oct 29 | Tang Kevin +110% Owner | $25.70K | 10,707 | $2.40 | +0% | Oct 27 | SEC |
| Oct 26 | Tang Kevin +110% Owner | $51.62K | 21,640 | $2.39 | +1% | Oct 22 | SEC |
| Oct 20 | Tang Kevin +110% Owner | $349.59K | 149,474 | $2.34 | +5% | Oct 16 | SEC |
| Jul 21 | Tang Kevin +110% Owner | $11.87K | 4,863 | $2.44 | +0% | Jul 17 | SEC |
| Jul 16 | Tang Kevin +110% Owner | $155.65K | 63,969 | $2.43 | +2% | Jul 14 | SEC |
| Jul 13 | Tang Kevin +110% Owner | $222.07K | 91,585 | $2.42 | +4% | Jul 9 | SEC |
| Jul 8 | Tang Kevin +110% Owner | $141.86K | 57,210 | $2.48 | +2% | Jul 6 | SEC |
| Jul 2 | Tang Kevin +110% Owner | $268.88K | 107,463 | $2.50 | +4% | Jun 30 | SEC |
| Jun 29 | Tang Kevin +110% Owner | $714.77K | 286,333 | $2.50 | +14% | Jun 25 | SEC |