美国 · SEC FORM 4
Amplitude, Inc.
AMPL · Nasdaq · CIK 0001866692 · Technology · Software—Application
内部人信号
0 qualifying P purchase groups
当前 180 天评分窗口
32 同一窗口内观察到的 Form 4 交易行
9 sales · 23 期权、代扣税、授予、赠与或其他交易行
为什么没有活跃信号？
评分构成
活跃窗口内没有合资格买入，因此不计算分数。缺失的输入不会被当作零分或看空信号。
为什么没有分数？
- 没有合资格公开市场买入可提供聚集度、规模、角色、近期性或确信度输入。
- 卖出及其他 Form 4 活动继续作为背景显示，不会形成负分。
卖出和其他 Form 4 活动会单独显示，不会形成负面买入信号。没有买入不会被评分为看空。
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。
Showing the six most active owners; 5 additional owner(s) remain in Form 4 申报证据.
买方广度、集中度与聚集买入
合资格买入进入 180 天研究窗口后，这些模块才会启用。
信号历史
Scores are archived only when the company qualifies for a published US buy-signal snapshot. 最近一次合资格买入: 2025-11-07 · Casey Andrew.
近期 Form 4 活动
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
- +9.3%
- 3M
- +63.0%
- 6M
- +112.3%
- 12M
- —
波动率与流动性
- 波动率
- 64.8%
- Beta
- 1.50
- 平均每日成交额
- USD 27.7M
估值
- 市值
- USD 1.8B
- P/E
- —
基本面
- 利润率
- -25.8%
- ROE
- -36.1%
- 细分行业
- Software—Application
市场数据
价格数据截至：2026-10-03 · 价格来源：OpenBB/yfinance · 来自 SEC 申报文件：利润率, ROE · 财年截止日：2025-12-31 · 来自 Yahoo Finance：市值 · 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
- 7,143,138
- 上期报告
- 6,494,072
- 日均成交量
- 1,576,711
- 回补天数
- 4.5
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 |
|---|---|---|---|---|---|---|---|
| 2025-11-07 | Casey Andrew | 买入 (P) | Class A Common Stock | 30,000 | USD 9.99 | USD 299,700 | SEC 申报 ↗ |
| 2025-03-13 | Casey Andrew | 买入 (P) | Class A Common Stock | 21,000 | USD 11.42 | USD 239,820 | SEC 申报 ↗ |
| 2022-02-23 | SC U.S. Growth IX Management, L.P.; SC U.S. VENTURE 2010 MANAGEMENT, L.P.; SC US (TTGP), LTD.; SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P.; Sequoia Capital U.S. Growth Fund IX, L.P.; Sequoia Capital U.S. Growth IX Principals Fund, L.P.; Sequoia Capital U.S. Growth Partners Fund IX, L.P. | 买入 (P) | Class A Common Stock | 186,217 | USD 20.51 | USD 3,819,838 | SEC 申报 ↗ |
| 2022-02-23 | Grady Patrick W | 买入 (P) | Class A Common Stock | 186,217 | USD 20.51 | USD 3,819,838 | SEC 申报 ↗ |
| 2022-02-22 | SC U.S. Growth IX Management, L.P.; SC U.S. VENTURE 2010 MANAGEMENT, L.P.; SC US (TTGP), LTD.; SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P.; Sequoia Capital U.S. Growth Fund IX, L.P.; Sequoia Capital U.S. Growth IX Principals Fund, L.P.; Sequoia Capital U.S. Growth Partners Fund IX, L.P. | 买入 (P) | Class A Common Stock | 552,532 | USD 20.30 | USD 11,216,185 | SEC 申报 ↗ |
| 2022-02-22 | Grady Patrick W | 买入 (P) | Class A Common Stock | 552,532 | USD 20.30 | USD 11,216,185 | SEC 申报 ↗ |
| 2022-02-18 | SC U.S. Growth IX Management, L.P.; SC U.S. VENTURE 2010 MANAGEMENT, L.P.; SC US (TTGP), LTD.; SEQUOIA CAPITAL U.S. VENTURE 2010-SEED FUND, L.P.; Sequoia Capital U.S. Growth Fund IX, L.P.; Sequoia Capital U.S. Growth IX Principals Fund, L.P.; Sequoia Capital U.S. Growth Partners Fund IX, L.P. | 买入 (P) | Class A Common Stock | 1,824,999 | USD 19.13 | USD 34,915,313 | SEC 申报 ↗ |
| 2022-02-18 | Grady Patrick W | 买入 (P) | Class A Common Stock | 1,824,999 | USD 19.13 | USD 34,915,313 | SEC 申报 ↗ |
Form 4 申报证据
58 transaction lines in the latest 365-day window; 708 in local history.
| 日期 | 申报人 | 类型 | 证券 | 股数 | 平均价格 | 估算金额 | 来源 |
|---|---|---|---|---|---|---|---|
| 2026-10-15 | Raji Vijaye Ganesh | 奖励／授予 (A) | Class A Common Stock | 37,851 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-10-05 | Tzuo Tien | 奖励／授予 (A) | Class A Common Stock | 818 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-10-05 | Schultz Erica | 奖励／授予 (A) | Class A Common Stock | 892 | USD 0.00 | USD 0 | SEC 申报 ↗ |
展开近期 Form 4 证据 (30 grouped rows)
| 日期 | 申报人 | 类型 | 证券 | 股数 | 平均价格 | 估算金额 | 来源 |
|---|---|---|---|---|---|---|---|
| 2026-10-15 | Raji Vijaye Ganesh | 奖励／授予 (A) | Class A Common Stock | 37,851 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-10-05 | Tzuo Tien | 奖励／授予 (A) | Class A Common Stock | 818 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-10-05 | Schultz Erica | 奖励／授予 (A) | Class A Common Stock | 892 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-10-02 | Skates Spenser | 卖出 (S) | Class A Common Stock | 70,087 | USD 14.52 | USD 1,017,684 | SEC 申报 ↗ |
| 2026-10-02 | Skates Spenser | C (C) | Class A Common Stock | 70,087 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-10-01 | Skates Spenser | 卖出 (S) | Class A Common Stock | 3,539 | USD 14.45 | USD 51,139 | SEC 申报 ↗ |
| 2026-10-01 | Skates Spenser | C (C) | Class A Common Stock | 3,539 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-09-30 | Skates Spenser | 卖出 (S) | Class A Common Stock | 1,374 | USD 14.45 | USD 19,858 | SEC 申报 ↗ |
| 2026-09-30 | Skates Spenser | C (C) | Class A Common Stock | 1,374 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-09-10 | Skates Spenser | 卖出 (S) | Class A Common Stock | 185,000 | USD 12.30 | USD 2,275,500 | SEC 申报 ↗ |
| 2026-09-10 | Skates Spenser | C (C) | Class A Common Stock | 185,000 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-09-04 | Crook Nathaniel Glenn | 卖出 (S) | Class A Common Stock | 300,000 | USD 12.99 | USD 3,897,000 | SEC 申报 ↗ |
| 2026-08-17 | Skates Spenser | 代扣税 (F) | Class A Common Stock | 52,369 | USD 13.03 | USD 682,368 | SEC 申报 ↗ |
| 2026-08-17 | Liu Curtis | 代扣税 (F) | Class A Common Stock | 53,878 | USD 13.03 | USD 702,030 | SEC 申报 ↗ |
| 2026-08-17 | Crook Nathaniel Glenn | 代扣税 (F) | Class A Common Stock | 109,368 | USD 13.03 | USD 1,425,065 | SEC 申报 ↗ |
| 2026-08-17 | Casey Andrew | 代扣税 (F) | Class A Common Stock | 72,814 | USD 13.03 | USD 948,766 | SEC 申报 ↗ |
| 2026-07-05 | Tzuo Tien | 奖励／授予 (A) | Class A Common Stock | 1,521 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-07-05 | Schultz Erica | 奖励／授予 (A) | Class A Common Stock | 1,659 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-06-12 | Wong Catherine | 卖出 (S) | Class A Common Stock | 7,453 | USD 6.79 | USD 50,606 | SEC 申报 ↗ |
| 2026-06-09 | Wong Catherine | 奖励／授予 (A) | Class A Common Stock | 24,857 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-06-09 | Whitehurst James M | 奖励／授予 (A) | Class A Common Stock | 24,857 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-06-09 | Schultz Erica | 奖励／授予 (A) | Class A Common Stock | 24,857 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-06-09 | Grady Patrick W | 奖励／授予 (A) | Class A Common Stock | 24,857 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-06-09 | Gill Ronald S | 奖励／授予 (A) | Class A Common Stock | 24,857 | USD 0.00 | USD 0 | SEC 申报 ↗ |
| 2026-06-01 | Liu Curtis | 卖出 (S) | Class A Common Stock | 22,786 | USD 8.03 | USD 182,972 | SEC 申报 ↗ |
| 2026-06-01 | Liu Curtis | 卖出 (S) | Class A Common Stock | 22,201 | USD 8.03 | USD 178,274 | SEC 申报 ↗ |
| 2026-05-15 | Skates Spenser | 代扣税 (F) | Class A Common Stock | 39,562 | USD 6.06 | USD 239,746 | SEC 申报 ↗ |
| 2026-05-15 | Liu Curtis | 代扣税 (F) | Class A Common Stock | 40,279 | USD 6.06 | USD 244,091 | SEC 申报 ↗ |
| 2026-05-15 | Crook Nathaniel Glenn | 代扣税 (F) | Class A Common Stock | 101,292 | USD 6.06 | USD 613,830 | SEC 申报 ↗ |
| 2026-05-15 | Casey Andrew | 代扣税 (F) | Class A Common Stock | 64,872 | USD 6.06 | USD 393,124 | 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 | 2026-10-18 |
|---|---|
| 排名版本 | US-v1.2 |
| 数据质量 | PASS ELIGIBLE · — |
| 股票代码 | AMPL |
| CIK | 0001866692 |
| 行业 | Technology |
| 细分行业 | Software—Application Yahoo Finance |
| SEC SIC | 7372 Services-Prepackaged Software |
| 交易所 | Nasdaq |
数据覆盖
| 本地 Form 4 历史 | 708 transaction lines from 2021-09-21 to 2026-10-15 50 P purchase lines · 260 S sale lines · 398 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.