美国 · SEC FORM 4
Boundless Bio, Inc.
BOLD · Nasdaq · CIK 0001782303 · Healthcare · Biotechnology
内部人信号
51.3 / 100
1 位买方 · 22 条买入交易行 · $1.5M 买入总额
为什么有这个信号？
买方广度较低
买入规模中等
角色中等
近期性较低
确信度较强
评分构成
每条进度条表示其对当前分数的贡献；权重和公式保持不变。
Cluster+7.0 / 35
买入规模+18.9 / 25
角色+14.0 / 20
近期性+2.2 / 10
确信度+9.1 / 10
哪些因素限制了当前分数？
- ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
- ⚠ 角色得分低 · 买入者中职位最高的是：TenPercentOwner（CEO、董事长和持股 10% 以上的股东得分最低）
- ⚠ Purchase activity is becoming less recent
Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.
US-v1.2 按当前 180 天规则给合资格的股票买入打分。分数只表示研究的先后，不是收益预测或概率。回测没有显示美国分数越高、之后的表现越好。
买方广度与集中度
合资格买方1
买入集中度100%最大买方： TANG CAPITAL MANAGEMENT LLC; TANG KEVIN · $1.5M
聚集买入 · 15天1 insider峰值活动： 2026-06-25–2026-07-10
Roles in the peak window: TenPercentOwner. Concentration uses priced qualifying P lines only and does not change the saved score.
内部人活动时间轴
申报人轨道展示最近 180 天。符号形状区分交易类型；卖出仅作为背景。
AprMayJunJulAugSepOct
TANG CAPITAL MANAGEMENT LLC; TANG KEVINTenPercentOwner
●●●●●●●●●●●●●●●●●●▼
BYBEE CLINTON; Burow Kristina; CRANDELL KEITH; GILLIS STEVEN; NELSEN ROBERTTenPercentOwner
○▼
ARCH Venture Fund IX Overage, L.P.; ARCH Venture Fund IX, L.P.; ARCH Venture Fund X Overage, L.P.; ARCH Venture Partners IX Overage, L.P.; ARCH Venture Partners IX, L.P.; ARCH Venture Partners IX, LLC; ARCH Venture Partners X Overage, L.P.; ARCH Venture Partners X, LLCTenPercentOwner
○▼
● 买入▼ 卖出○ 其他
—
信号历史
51.3 / 100
最新留档分数
→ +0.0 pts相对上一个留档快照
- 51.5
- 51.5
- 51.4
- 51.3
- 51.3
Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.
近期 Form 4 活动
22买入
3卖出
2其他 Form 4 交易行
9SEC 申报 · 365天
买入22 qualifying P line(s) · 180 days
卖出3 sale line(s) · 仅供背景
其他2 exercise / withholding / award / gift / other lines
10b5-1／计划交易Not assessed
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
市场背景
市场背景补充近期价格表现与风险信息，不影响内部人信号。
价格表现
- 1M
- -10.9%
- 3M
- +3.7%
- 6M
- +123.9%
- 12M
- +94.6%
波动率与流动性
- 波动率
- 86.8%
- Beta
- —
- 平均每日成交额
- USD 445,939
估值
- 市值
- USD 57.6M
- P/E
- —
基本面
- 利润率
- —
- ROE
- -59.0%
- 细分行业
- Biotechnology
市场数据
价格数据截至：2026-10-11 · 价格来源：OpenBB/yfinance; 成交量来自 本机价格缓存 (yfinance) · 来自 SEC 申报文件：市值, ROE · 财年截止日：2025-12-31 · 市值 = 申报文件封面所列的已发行股数 × 最新收盘价。股数日期：2026-08-05 · Status: PASS
空头余额
空头余额是券商向 FINRA 申报的外部背景数据，不影响内部人信号。
- 空头股数
- 778,470
- 上期报告
- 811,956
- 日均成交量
- 183,184
- 回补天数
- 4.2
FINRA 结算日：2026-09-30 · 获取日期 2026-10-12 · FINRA 股票空头余额 ↗. 这是股数，每月两个结算日之后约一周公布；不是占已发行股份的比例。
历史股票买入
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | 类型 | 证券 | 股数 | 平均价格 | 估算金额 | 来源 |
|---|---|---|---|---|---|---|---|
| 2026-07-21 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 2,975 | USD 2.44 | USD 7,259 | SEC 申报 ↗ |
| 2026-07-20 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 1,623 | USD 2.44 | USD 3,960 | SEC 申报 ↗ |
| 2026-07-17 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 265 | USD 2.44 | USD 647 | SEC 申报 ↗ |
| 2026-07-16 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 18,491 | USD 2.44 | USD 45,118 | SEC 申报 ↗ |
| 2026-07-15 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 1,600 | USD 2.44 | USD 3,904 | SEC 申报 ↗ |
| 2026-07-14 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 43,878 | USD 2.43 | USD 106,624 | SEC 申报 ↗ |
| 2026-07-13 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 48,211 | USD 2.42 | USD 116,671 | SEC 申报 ↗ |
| 2026-07-10 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 43,367 | USD 2.43 | USD 105,382 | SEC 申报 ↗ |
| 2026-07-09 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 7 | USD 2.48 | USD 17 | SEC 申报 ↗ |
| 2026-07-08 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 14,338 | USD 2.46 | USD 35,271 | SEC 申报 ↗ |
| 2026-07-07 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 15,810 | USD 2.48 | USD 39,209 | SEC 申报 ↗ |
| 2026-07-06 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 27,062 | USD 2.49 | USD 67,384 | SEC 申报 ↗ |
| 2026-07-02 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 9,821 | USD 2.49 | USD 24,454 | SEC 申报 ↗ |
| 2026-07-01 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 71,612 | USD 2.49 | USD 178,314 | SEC 申报 ↗ |
| 2026-06-30 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 26,030 | USD 2.54 | USD 66,112 | SEC 申报 ↗ |
Form 4 申报证据
27 transaction lines in the latest 365-day window; 49 in local history.
| 日期 | 申报人 | 类型 | 证券 | 股数 | 平均价格 | 估算金额 | 来源 |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 卖出 (S) | Common Stock | 18,300 | USD 2.97 | USD 54,351 | SEC 申报 ↗ |
| 2026-07-21 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 2,975 | USD 2.44 | USD 7,259 | SEC 申报 ↗ |
| 2026-07-20 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 1,623 | USD 2.44 | USD 3,960 | SEC 申报 ↗ |
展开近期 Form 4 证据 (23 grouped rows)
| 日期 | 申报人 | 类型 | 证券 | 股数 | 平均价格 | 估算金额 | 来源 |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 卖出 (S) | Common Stock | 18,300 | USD 2.97 | USD 54,351 | SEC 申报 ↗ |
| 2026-07-21 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 2,975 | USD 2.44 | USD 7,259 | SEC 申报 ↗ |
| 2026-07-20 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 1,623 | USD 2.44 | USD 3,960 | SEC 申报 ↗ |
| 2026-07-17 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 265 | USD 2.44 | USD 647 | SEC 申报 ↗ |
| 2026-07-16 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 18,491 | USD 2.44 | USD 45,118 | SEC 申报 ↗ |
| 2026-07-15 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 1,600 | USD 2.44 | USD 3,904 | SEC 申报 ↗ |
| 2026-07-14 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 43,878 | USD 2.43 | USD 106,624 | SEC 申报 ↗ |
| 2026-07-13 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 48,211 | USD 2.42 | USD 116,671 | SEC 申报 ↗ |
| 2026-07-10 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 43,367 | USD 2.43 | USD 105,382 | SEC 申报 ↗ |
| 2026-07-09 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 7 | USD 2.48 | USD 17 | SEC 申报 ↗ |
| 2026-07-08 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 14,338 | USD 2.46 | USD 35,271 | SEC 申报 ↗ |
| 2026-07-07 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 15,810 | USD 2.48 | USD 39,209 | SEC 申报 ↗ |
| 2026-07-06 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 27,062 | USD 2.49 | USD 67,384 | SEC 申报 ↗ |
| 2026-07-02 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 9,821 | USD 2.49 | USD 24,454 | SEC 申报 ↗ |
| 2026-07-01 | BYBEE CLINTON; Burow Kristina; CRANDELL KEITH; GILLIS STEVEN; NELSEN ROBERT | 卖出 (S) | Common Stock | 16,000 | USD 2.49 | USD 39,840 | SEC 申报 ↗ |
| 2026-07-01 | BYBEE CLINTON; Burow Kristina; CRANDELL KEITH; GILLIS STEVEN; NELSEN ROBERT | 期权行权／转换 (M) | Common Stock | 16,000 | USD 1.03 | USD 16,480 | SEC 申报 ↗ |
| 2026-07-01 | ARCH Venture Fund IX Overage, L.P.; ARCH Venture Fund IX, L.P.; ARCH Venture Fund X Overage, L.P.; ARCH Venture Partners IX Overage, L.P.; ARCH Venture Partners IX, L.P.; ARCH Venture Partners IX, LLC; ARCH Venture Partners X Overage, L.P.; ARCH Venture Partners X, LLC | 卖出 (S) | Common Stock | 16,000 | USD 2.49 | USD 39,840 | SEC 申报 ↗ |
| 2026-07-01 | ARCH Venture Fund IX Overage, L.P.; ARCH Venture Fund IX, L.P.; ARCH Venture Fund X Overage, L.P.; ARCH Venture Partners IX Overage, L.P.; ARCH Venture Partners IX, L.P.; ARCH Venture Partners IX, LLC; ARCH Venture Partners X Overage, L.P.; ARCH Venture Partners X, LLC | 期权行权／转换 (M) | Common Stock | 16,000 | USD 1.03 | USD 16,480 | SEC 申报 ↗ |
| 2026-07-01 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 71,612 | USD 2.49 | USD 178,314 | SEC 申报 ↗ |
| 2026-06-30 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 26,030 | USD 2.54 | USD 66,112 | SEC 申报 ↗ |
| 2026-06-29 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 64,762 | USD 2.47 | USD 159,970 | SEC 申报 ↗ |
| 2026-06-26 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 75,181 | USD 2.55 | USD 191,710 | SEC 申报 ↗ |
| 2026-06-25 | TANG CAPITAL MANAGEMENT LLC; TANG KEVIN | 买入 (P) | Common Stock | 146,390 | USD 2.48 | USD 363,088 | SEC 申报 ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
快照与身份
| 快照日期 | 2026-10-19 |
|---|---|
| 排名版本 | US-v1.2 |
| 数据质量 | PASS ELIGIBLE · — |
| 股票代码 | BOLD |
| CIK | 0001782303 |
| 行业 | Healthcare |
| 细分行业 | Biotechnology Yahoo Finance |
| SEC SIC | 2834 Pharmaceutical Preparations |
| 交易所 | Nasdaq |
数据覆盖
| 本地 Form 4 历史 | 49 transaction lines from 2024-04-02 to 2026-08-26 30 P purchase lines · 3 S sale lines · 16 other lines |
|---|---|
| SEC 公司申报 | 打开 SEC 申报 ↗ |
Local ledger as of 2026-10-19. Mapping status is an audit field and does not erase SEC filing evidence.