SEC Form 4
iBio, Inc. (IBIO) insider trading
In the 12 months to Oct 26, 2026, 3 IBIO insiders reported open-market purchases of $98.1K across 3 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
- $98.1K
- 3 filings
Who traded IBIO, and when
- Purchase
IBIO daily close from Oct 27, 2025 to Oct 26, 2026, between $0.71 and $3.07, last $0.71. 0 sale and 3 purchase filings by 3 insiders, marked at their filing dates. Felipe Duran, Chief Financial Officer: bought $50.1K across 1 filing, first filed Mar 23, 2026, last Mar 23, 2026. Martin Brenner, Officer (see filing): bought $24.9K across 1 filing, first filed Mar 23, 2026, last Mar 23, 2026. Marc Banjak, Chief Legal Officer: bought $23.1K across 1 filing, first filed Mar 27, 2026, last Mar 27, 2026.
Largest mark · tap a row for others
Felipe Duran · Chief Financial Officer
Purchase $50,132
24,835 shares at $2.02 avg
Filed Mar 23, 2026 · traded Mar 19
Close on filing date $2.21
Felipe Duran · Chief Financial Officer
Chief Financial Officer
$50.1K boughtMartin Brenner · Officer (see filing)
Officer (see filing)
$24.9K boughtMarc Banjak · Chief Legal Officer
Chief Legal Officer
$23.1K boughtOpen-market trades
3 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Felipe Duran | Chief Financial Officer | — | $50.1K | 1 | — | |
| Martin Brenner | Officer (see filing) | — | $24.9K | 1 | — | |
| Marc Banjak | Chief Legal Officer | — | $23.1K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Marc Banjak Chief Legal Officer | Purchase | 13,934 | $1.65 | $23.1K | 25,000 | |
traded | Martin Brenner Officer (see filing) | Purchase | 12,336 | $2.02 | $24.9K | 30,652 | |
traded | Felipe Duran Chief Financial Officer | Purchase | 24,835 | $2.02 | $50.1K | 35,974 |
GET /stocks/filings/vX/form-4?tickers=IBIO&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"IBIO"
],
"issuer_cik": "0001420720",
"owner_cik": "0002033869",
"accession_number": "0001104659-26-036093",
"form_type": "4",
"filing_date": "2026-03-27",
"period_of_report": "2026-03-26",
"issuer_name": "iBio, Inc.",
"issuer_trading_symbol": "IBIO",
"owner_name": "Banjak Marc",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Legal Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-03-26",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 12500,
"transaction_price_per_share": 1.6425,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 23566,
"transaction_value": 20531.25,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"IBIO"
],
"issuer_cik": "0001420720",
"owner_cik": "0002033869",
"accession_number": "0001104659-26-036093",
"form_type": "4",
"filing_date": "2026-03-27",
"period_of_report": "2026-03-26",
"issuer_name": "iBio, Inc.",
"issuer_trading_symbol": "IBIO",
"owner_name": "Banjak Marc",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Legal Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-03-26",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 1434,
"transaction_price_per_share": 1.76,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 25000,
"transaction_value": 2523.84,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// 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.
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
How current is IBIO’s insider data?
These are IBIO 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.
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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 IBIO 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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