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Rallybio Corp

RLYB
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001739410

No open-market purchases or sales by Rallybio Corp insiders were filed in the last 90 days; 37 institutions reported holding it in 13F filings for Q2 2026, worth $68.1M in total; Viking Global Investors is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Rallybio Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Rallybio Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Rallybio Corp
NameTitleLast reported holdingLast filingFilings, past year
Chung WendyDirector3,562Sep 18, 20261
Boudreau Helen MDirector6,542Jul 10, 20261
Schneeberger Daniel10% Owner926,352IndirectMay 20, 20264
ADAR1 Capital Management, LLC10% Owner926,352IndirectMay 20, 20264
Lieber Jonathan IChief Financial Officer4,115Feb 23, 20261
Hunt RonaldDirector2,301,603IndirectFeb 20, 20261
Mackay MartinDirector282,609Feb 20, 20261
Hopfner Robert LorneDirector2,267,411IndirectMay 15, 20250
Nash Christine ADirector–May 15, 20250
Soteropoulos PaulaDirector–May 15, 20250
Liu HuiDirector–May 15, 20250
Uden StephenChief Executive Officer719,127Feb 19, 20250
Ryder StevenChief Medical Officer–Feb 19, 20250
Parmar KushDirector2,378,969IndirectMay 17, 20240
Rocklage Scott M10% Owner2,378,969IndirectMar 9, 20230
Schwab Andrew J.10% Owner2,378,969IndirectMar 9, 20230
5AM Ventures V, L.P.10% Owner2,378,969IndirectMar 9, 20230
5AM Partners V, LLC10% Owner2,378,969IndirectMar 9, 20230
Viking Global Investors LP10% Owner4,194,777IndirectNov 17, 20220
Halvorsen Ole Andreas10% Owner4,194,777IndirectNov 17, 20220
Ott David C.10% Owner4,194,777IndirectNov 17, 20220
Viking Global Opportunities Portfolio GP LLC10% Owner4,194,777IndirectNov 17, 20220
Viking Global Opportunities GP LLC10% Owner4,194,777IndirectNov 17, 20220
Viking Global Opportunities Illiquid Investments Sub-Master LP10% Owner4,194,777IndirectNov 17, 20220
Shabet Rose Sharon10% Owner4,194,777IndirectNov 17, 20220
Viking Global Opportunities Parent GP LLC10% Owner–Nov 17, 20220
5AM Opportunities I, L.P.10% Owner2,478,969IndirectJun 7, 20220
5AM Opportunities I (GP), LLC10% Owner2,478,969IndirectJun 7, 20220
Fryer Jeffrey MSee Remarks47,048IndirectMar 23, 20220
Shannon Timothy MDirector2,409,712IndirectJan 5, 20220
FMR LLCOther: See Remark 11,694,388IndirectAug 4, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
May 20, 2026 (view filing)8:45 PM ETMay 18-192 daysSchneeberger Daniel and 1 other10% OwnerPPurchase+16.2K$13.98+$226.6K+1.8%926.4K after3 lots
May 15, 2026 (view filing)8:49 PM ETMay 13-152 daysSchneeberger Daniel and 1 other10% OwnerPPurchase+79.6K$13.99+$1.11M+9.6%910.1K after4 lots
May 13, 2026 (view filing)9:22 PM ETMay 11-122 daysSchneeberger Daniel and 1 other10% OwnerPPurchase+50.8K$14.00+$711.1K+6.5%830.6K after4 lots
May 6, 2026 (view filing)9:32 PM ETMay 4-52 daysSchneeberger Daniel and 1 other10% OwnerPPurchase+155.9K$13.97+$2.18M+25.0%779.8K after3 lots
Feb 23, 2026 (view filing)Feb 23Same dayLieber Jonathan IChief Financial OfficerSSale−789$5.06−$3.99K−16.1%4.12K after
Mar 16, 2023 (view filing)Mar 142 daysLieber Jonathan ISee RemarksPPurchase+5.00K$5.21+$26.1KNew position5.00K after
Mar 9, 2023 (view filing)4:35 PM ETMar 72 daysRocklage Scott M and 3 others10% OwnerSSale−100.0K$8.20−$820.0K−4.0%2.38M afterDuplicate filing
Mar 9, 2023 (view filing)Mar 72 daysParmar KushDirectorSSale−100.0K$8.20−$820.0K−4.0%2.38M after
Nov 17, 2022 (view filing)4:30 PM ETNov 152 daysViking Global Investors LP and 7 others10% OwnerPPurchase+3.33M$6.00+$20.0M–3.33M afterDerivative
Jun 7, 2022 (view filing)5:02 PM ETJun 34 daysRocklage Scott M and 5 others10% OwnerSSale−150.0K$12.50−$1.88M−5.7%2.48M after2 lots
Jun 7, 2022 (view filing)Jun 34 daysParmar KushDirector, 10% OwnerSSale−150.0K$12.50−$1.88M−10.7%1.25M after2 lots
May 25, 2022 (view filing)6:31 PM ETMay 232 daysRocklage Scott M and 5 others10% OwnerSSale−100.0K$13.00−$1.30M−3.7%2.58M after2 lots
May 25, 2022 (view filing)May 232 daysParmar KushDirector, 10% OwnerSSale−100.0K$13.00−$1.30M−7.1%1.30M after2 lots
Mar 23, 2022 (view filing)Mar 212 daysFryer Jeffrey MSee RemarksPPurchase+3.00K$8.04+$24.1K+6.8%47.0K after
Feb 10, 2022 (view filing)6:24 PM ETFeb 82 daysRocklage Scott M and 5 others10% OwnerSSale−210.0K$13.05−$2.74M−7.4%2.65M after2 lots
Feb 10, 2022 (view filing)Feb 82 daysParmar KushDirectorSSale−210.0K$13.05−$2.74M−13.6%1.34M after2 lots
Jan 21, 2022 (view filing)Jan 192 daysFryer Jeffrey MSee RemarksPPurchase+1.40K$8.70+$12.2K+3.3%44.0K after
Jan 14, 2022 (view filing)Jan 12-132 daysUden StephenSee RemarksPPurchase+10.0K$9.85+$98.5K+1.4%719.1K after3 lots
Jan 12, 2022 (view filing)Jan 10-112 daysMackay MartinChief Executive OfficerPPurchase+10.0K$10.35+$103.5K+3.7%282.6K after2 lots
Jan 11, 2022 (view filing)Jan 74 daysFryer Jeffrey MSee RemarksPPurchase+10.0K$9.41+$94.1K+30.6%42.6K after2 lots
Aug 4, 2021 (view filing)9:17 PM ETAug 22 daysRocklage Scott M and 5 others10% OwnerPPurchase+615.4K$13.00+$8.00M+77.8%1.41M afterDuplicate filing
Aug 4, 2021 (view filing)Aug 22 daysParmar KushDirectorPPurchase+615.4K$13.00+$8.00M+77.8%1.41M after
Aug 4, 2021 (view filing)Aug 22 daysHopfner Robert LorneDirectorPPurchase+576.9K$13.00+$7.50M+34.1%2.27M after
Aug 4, 2021 (view filing)Aug 22 daysHunt RonaldDirectorPPurchase+307.7K$13.00+$4.00M+15.4%2.30M after2 lots
Aug 4, 2021 (view filing)Aug 22 daysShannon Timothy MDirectorPPurchase+76.9K$13.00+$1.00M+3.3%2.41M after
Aug 2, 2021 (view filing)8:40 PM ETJul 294 daysViking Global Investors LP and 6 others10% OwnerPPurchase+806.0K$13.00+$10.5M+23.8%4.19M after