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KYMR — blockholders· KYMERA THERAPEUTICS INC

Everyone who has reported crossing 5% of this issuer inside the capture window — Schedule 13D (active intent, with its Item-4 purpose) and Schedule 13G (passive by rule) kept apart — each with its full amendment chain and, in the fold, the cover page's sole and shared voting and dispositive power per reporting person. Percents are each group's own as-filed figures and do not add up across filers: two filers can report the same shares.

Positions
9
20 filings behind them
13D · 13G
4 · 16
active · passive filings
Escalations
0
13G → 13D · lower bound
Newest filing
2026-08-14
capture 2024-01-10 → 2026-08-21
Active — Schedule 13D · 2 positions

The filer says it may seek to influence or change control, and states why in Item 4. Open the fold for each reporting person's voting and dispositive power.

FilerForm% of classChangeSharesFiledChainControlFiling
Baker Bros. Advisors LP13D/A No. 310.9%▲ +1.4pp8,676,7972025-12-112SEC ↗
BIOTECHNOLOGY VALUE FUND L P13D/A No. 66.3%▼ -2.2pp5,237,1512026-06-262SEC ↗
Passive — Schedule 13G · 7 positions

Filed passively under Rule 13d-1(b) (qualified institution), (c) (passive investor) or (d) (exempt). A 13G filer is not an activist and files no purpose statement.

FilerForm% of classChangeSharesFiledChainControlFiling
FMR LLC13G/A No. 4QII14.3%▲ +3.1pp11,681,4502026-05-064SEC ↗
T. Rowe Price Associates, Inc.13G/A No. 7QII8.6%▲ +1.5pp7,112,3452026-08-142SEC ↗
T. Rowe Price Investment Management, Inc.13GQII6.7%NEW5,460,2572026-05-151SEC ↗
BlackRock, Inc.13G/A No. 3QII5.4%first captured3,803,2272025-07-181SEC ↗
Wellington Management Group LLP13G/A No. 8QII4.8%▼ -0.7pp3,889,6872026-05-155SEC ↗
Atlas Venture Fund X, L.P.13G/A No. 5Exempt2.9%first captured2,384,6852026-08-131SEC ↗
The Vanguard Group13G/A No. 4QII0%EXITED02026-03-272SEC ↗
Source: SEC EDGAR Schedule 13D/G structured XML (public domain) · newest filing 2026-08-14 · capture 2024-01-10 → 2026-08-21 reported positions only — not a portfolio

Voting is not disposition. Each reporting person's cover page splits its holding into VOTING power (sole / shared) and DISPOSITIVE power (sole / shared). Voting and dispositive totals are summed WITHIN a person only — never across persons, because a group's members report overlapping interests in the same shares and the filing's aggregate is not their sum. Where a person's voting total is below its reported aggregate, the difference is shares it reports beneficial ownership of with no voting power reported; it is shown as a gap, never as a second position.

Percent is as filed. Percent is the filing's own percent of class, as filed (0–100). It's the reporting group's figure — not summed across filers, not recomputed against shares outstanding, not rescaled. Share counts are as filed and never subtracted across filings (a split would make that meaningless); the only change we show is the change in the as-filed percent against the prior captured filing.

We never call an amendment “new”. A filing is 'first captured' when we hold nothing earlier for that company + filer. On an amendment that means the original predates our window, not that the position is new — so we never badge an amendment 'new,' even when the raw data says so.

Escalations. An escalation is a filer moving from a passive 13G to an active 13D on the same company — telling the SEC it may now seek to influence control. It's a lower bound: a 13G filed before our window began is invisible and never guessed. If the 13D leg is a 13D/A, an earlier 13D predates our window, so the crossing shown is the first one visible inside it, not necessarily the filer's first.

Parsed Schedule 13D/G XML (events.db schedule_13dg + schedule_13dg_persons). 13D = active intent; 13G filers report passively under Rule 13d-1(b) QII / (c) Passive / (d) Exempt and are never activists. Percents are the reporting group's own as-filed figures and are NOT additive across filers — two filers can report the same shares. Structured 13D/13G coverage starts December 2024 (SEC XML mandate).