SEC Form 4
Amesite Inc. (AMST) insider trading
In the 12 months to Oct 26, 2026, 2 AMST insiders reported open-market purchases of $600.0K across 2 filings; no open-market sales were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $0
- 0 filings · 0 insiders
- Open-market purchases
- $600.0K
- 2 filings
Who traded AMST, and when
- Purchase
AMST daily close from Oct 27, 2025 to Oct 26, 2026, between $0.61 and $3.73, last $0.61. 0 sale and 2 purchase filings by 2 insiders, marked at their filing dates. George Parmer, Director: bought $350.0K across 1 filing, first filed May 18, 2026, last May 18, 2026. Ann Marie Sastry, CHIEF EXECUTIVE OFFICER: bought $250.0K across 1 filing, first filed May 18, 2026, last May 18, 2026.
Largest mark · tap a row for others
George Parmer · Director
Purchase $349,999
243,902 shares at $1.44 avg
Filed May 18, 2026 · traded Apr 28
Close on filing date $0.79
George Parmer · Director
Director
$350.0K boughtAnn Marie Sastry · CHIEF EXECUTIVE OFFICER
CHIEF EXECUTIVE OFFICER
$250.0K boughtOpen-market trades
2 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| George Parmer | Director | — | $350.0K | 1 | — | |
| Ann Marie Sastry | CHIEF EXECUTIVE OFFICER | — | $250.0K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | George Parmer Director | Purchase | 243,902 | $1.44 | $350.0K | 566,962 | |
traded | Ann Marie Sastry CHIEF EXECUTIVE OFFICER | Purchase | 174,216 | $1.44 | $250.0K | 1,049,647 |
GET /stocks/filings/vX/form-4?tickers=AMST&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"AMST"
],
"issuer_cik": "0001807166",
"owner_cik": "0001735506",
"accession_number": "0001213900-26-058452",
"form_type": "4",
"filing_date": "2026-05-18",
"period_of_report": "2026-04-28",
"issuer_name": "Amesite Inc.",
"issuer_trading_symbol": "AMST",
"owner_name": "Sastry Ann Marie",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "CHIEF EXECUTIVE OFFICER",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-04-28",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 174216,
"transaction_price_per_share": 1.435,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 1049647,
"transaction_value": 249999.96000000002,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The shares were purchased in a private placement transaction pursuant to a securities purchase agreement. For more information relating to the offering pursuant to which the reported shares were purchased, please refer to the 424(b)(5) prospectus supplement filed by Amesite Inc. with the SEC on April 28, 2026."
}
]
},
{
"tickers": [
"AMST"
],
"issuer_cik": "0001807166",
"owner_cik": "0001626673",
"accession_number": "0001213900-26-058450",
"form_type": "4",
"filing_date": "2026-05-18",
"period_of_report": "2026-04-28",
"issuer_name": "Amesite Inc.",
"issuer_trading_symbol": "AMST",
"owner_name": "Parmer George",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-04-28",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 243902,
"transaction_price_per_share": 1.435,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 566962,
"transaction_value": 349999.37,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The shares were purchased in a private placement transaction pursuant to a securities purchase agreement. For more information relating to the offering pursuant to which the reported shares were purchased, please refer to the 424(b)(5) prospectus supplement filed by Amesite Inc. with the SEC on April 28, 2026."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 4 records
- Option exercises4 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Amesite Inc.'s CEO sold stock?
No. Ann Marie Sastry (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is AMST’s insider data?
These are AMST Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
Build with AI
Track AMST insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for AMST every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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