RLYB insider buying and SEC filings, explained
Rallybio Corp · CIK 1739410
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Pharmaceutical Preparations
- State of incorporation
- DE
- Fiscal year end
- Dec 31
- Former names
- Rallybio Holdings, LLC
Insider activity in the last 12 months
Bought
$4.2M
Insiders who bought
1
Sold (not marked 10b5-1)
$14K
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 27, 2026 | Sale | Jonathan I Lieber (CFO) sold 599 shares at $16.04 ($10K). Holdings down 4% to 15,551 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 28, 2026, 5:03 PM ET |
| May 18–19, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 16,209 shares indirectly between May 18 and May 19 at about $13.98 ($227K), reported as a purchase (code P). Indirect holdings up 2% to 926,352 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed May 20, 2026 |
| May 13–15, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 79,559 shares indirectly between May 13 and May 15 at about $13.99 ($1.1M), reported as a purchase (code P). Indirect holdings up 10% to 910,143 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed May 15, 2026 |
| May 11–12, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 50,800 shares indirectly between May 11 and May 12 at about $14.00 ($711K), reported as a purchase (code P). Indirect holdings up 7% to 830,584 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed May 13, 2026 |
| May 4–5, 2026 | Purchase (code P) | Daniel Schneeberger (10% owner) bought 155,905 shares indirectly between May 4 and May 5 at about $13.98 ($2.2M), reported as a purchase (code P). Indirect holdings up 25% to 779,784 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed May 6, 2026 |
| Feb 23, 2026 | Sale | Jonathan I Lieber (CFO) sold 789 shares at $5.06 ($4K). Holdings down 16% to 4,115 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 23, 2026 |
19 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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