内部人交易雷达

美国 · SEC Form 4 · 快照日期： 2026-10-18 · 构建时间： 2026-10-18 · English

← 美国市场 · 覆盖记录

美国 · SEC FORM 4

Atara Biotherapeutics, Inc.

ATRA · Nasdaq · CIK 0001604464 · Healthcare · Biotechnology

内部人信号

57.4 / 100

2 位买方 · 2 条买入交易行 · $5.7M 买入总额

为什么有这个信号？

买方广度较低
买入规模较强
角色中等
近期性中等
确信度较低
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+14.0 / 35
买入规模+20.3 / 25
角色+14.0 / 20
近期性+4.8 / 10
确信度+4.3 / 10

哪些因素限制了当前分数？

  • ⚠ Cluster breadth is moderate · 2 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）
  • ⚠ Buying conviction is reduced by concurrent selling

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。

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
Cherry Brian NDirector
○●
Nguyen AnhCoPresident and CEO
▼▼
Green Jeremy; Redmile Group, LLCDirector
○○
HEIDEN WILLIAM KDirector
○
Fust Matthew KDirector
○
Ciongoli Gregory AustinDirector,TenPercentOwner,Other
○
● 买入▼ 卖出○ 其他

Showing the six most active owners; 3 additional owner(s) remain in Form 4 申报证据.

买方广度与集中度

合资格买方2
买入集中度83%最大买方： EcoR1 Capital, LLC · $4.7M
聚集买入 · 15天1 insider峰值活动： 2026-05-07–2026-05-07

Roles in the peak window: TenPercentOwner. Concentration uses priced qualifying P lines only and does not change the saved score.

信号历史

57.4 / 100

最新留档分数

↓ -0.2 pts相对上一个留档快照
  1. 57.9
  2. 57.8
  3. 57.8
  4. 57.6
  5. 57.4

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

近期 Form 4 活动

2买入
18卖出
12其他 Form 4 交易行
20SEC 申报 · 365天
买入2 qualifying P line(s) · 180 days
卖出4 sale line(s) · 仅供背景
其他6 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
-4.1%
3M
+9.3%
6M
+103.9%
12M
-40.2%

波动率与流动性

波动率
125.3%
Beta
—
平均每日成交额
USD 490,800

估值

市值
USD 95.2M
P/E
2.9×

基本面

利润率
27.1%
ROE
—
细分行业
Biotechnology

市场数据

价格数据截至：2026-10-09 · 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, P/E, 利润率 · 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：2026-08-10 · 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
321,792
上期报告
404,270
日均成交量
39,657
回补天数
8.1

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 dateReporting owner类型证券股数平均价格估算金额来源
2026-09-04Cherry Brian N买入 (P)Common Stock104,166USD 9.60USD 999,994SEC 申报 ↗
2026-05-07EcoR1 Capital, LLC买入 (P)Common Stock507,407USD 9.35USD 4,744,255SEC 申报 ↗
2025-08-15Huang James; Panacea Innovation Ltd买入 (P)Common Stock55,000USD 12.19USD 670,450SEC 申报 ↗
2025-07-17Huang James; Panacea Innovation Ltd买入 (P)Common Stock19,335USD 9.64USD 186,389SEC 申报 ↗
2023-11-14Gallagher Carol Giltner买入 (P)Common Stock90,980USD 0.31USD 28,204SEC 申报 ↗
2023-11-13Gallagher Carol Giltner买入 (P)Common Stock179,020USD 0.22USD 39,384SEC 申报 ↗
2023-11-10HEIDEN WILLIAM K买入 (P)Common Stock100,000USD 0.25USD 25,000SEC 申报 ↗
2023-11-10DOBMEIER ERIC买入 (P)Common Stock446,825USD 0.23USD 102,770SEC 申报 ↗
2021-06-14Yarema Kristin买入 (P)Common Stock32,333USD 14.57USD 471,065SEC 申报 ↗
2021-06-11Yarema Kristin买入 (P)Common Stock2,021USD 14.50USD 29,304SEC 申报 ↗

Form 4 申报证据

32 transaction lines in the latest 365-day window; 273 in local history.

日期申报人类型证券股数平均价格估算金额来源
2026-09-04Cherry Brian N买入 (P)Common Stock104,166USD 9.60USD 999,994SEC 申报 ↗
2026-08-17Nguyen AnhCo卖出 (S)Common Stock5,062USD 8.08USD 40,901SEC 申报 ↗
2026-07-22Green Jeremy; Redmile Group, LLC期权行权／转换 (M)Common Stock195,211USD —USD —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
2026-09-04Cherry Brian N买入 (P)Common Stock104,166USD 9.60USD 999,994SEC 申报 ↗
2026-08-17Nguyen AnhCo卖出 (S)Common Stock5,062USD 8.08USD 40,901SEC 申报 ↗
2026-07-22Green Jeremy; Redmile Group, LLC期权行权／转换 (M)Common Stock195,211USD —USD —SEC 申报 ↗
2026-07-22Green Jeremy; Redmile Group, LLC代扣税 (F)Common Stock60USD —USD —SEC 申报 ↗
2026-06-11Cherry Brian N奖励／授予 (A)Common Stock24,000USD 0.00USD 0SEC 申报 ↗
2026-06-09HEIDEN WILLIAM K奖励／授予 (A)Common Stock12,000USD 0.00USD 0SEC 申报 ↗
2026-06-09Fust Matthew K奖励／授予 (A)Common Stock12,000USD 0.00USD 0SEC 申报 ↗
2026-06-09Ciongoli Gregory Austin奖励／授予 (A)Common Stock12,000USD 0.00USD 0SEC 申报 ↗
2026-05-18Nguyen AnhCo卖出 (S)Common Stock5,241USD 9.13USD 47,850SEC 申报 ↗
2026-05-18Grant-Huerta Yanina卖出 (S)Common Stock2,414USD 9.13USD 22,040SEC 申报 ↗
2026-05-07Huang James; Panacea Innovation Ltd卖出 (S)Common Stock313,446USD 10.10USD 3,165,805SEC 申报 ↗
2026-05-07EcoR1 Capital, LLC买入 (P)Common Stock507,407USD 9.35USD 4,744,255SEC 申报 ↗
2026-03-17Huang James; Panacea Innovation Ltd期权行权／转换 (M)Common Stock259,163USD 0.00USD 0SEC 申报 ↗
2026-03-17Huang James; Panacea Innovation Ltd代扣税 (F)Common Stock5USD 5.23USD 26SEC 申报 ↗
2026-03-09Nguyen AnhCo奖励／授予 (A)Common Stock81,100USD 0.00USD 0SEC 申报 ↗
2026-03-09Grant-Huerta Yanina奖励／授予 (A)Common Stock20,300USD 0.00USD 0SEC 申报 ↗
2026-03-02Nguyen AnhCo卖出 (S)Common Stock2,996USD 5.09USD 15,247SEC 申报 ↗
2026-03-02Grant-Huerta Yanina卖出 (S)Common Stock2,104USD 5.08USD 10,688SEC 申报 ↗
2026-01-12Huang James; Panacea Innovation Ltd卖出 (S)Common Stock80,554USD 6.07USD 488,963SEC 申报 ↗
2025-11-28Huang James; Panacea Innovation Ltd期权行权／转换 (M)Common Stock48,737USD 0.00USD 0SEC 申报 ↗
2025-11-28Huang James; Panacea Innovation Ltd代扣税 (F)Common Stock1USD 14.03USD 14SEC 申报 ↗
2025-11-17Nguyen AnhCo卖出 (S)Common Stock2,915USD 13.19USD 38,449SEC 申报 ↗
2025-11-17Grant-Huerta Yanina卖出 (S)Common Stock1,804USD 13.19USD 23,795SEC 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2026-10-18
排名版本US-v1.2
数据质量PASS ELIGIBLE · —
股票代码ATRA
CIK0001604464
行业Healthcare
细分行业Biotechnology Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
交易所Nasdaq

数据覆盖

本地 Form 4 历史273 transaction lines from 2020-01-24 to 2026-09-04
11 P purchase lines · 169 S sale lines · 93 other lines
SEC 公司申报打开 SEC 申报 ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.