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The company

Zenas BioPharma, Inc.

ZBIO · Nasdaq

Health CareBiotechnologyJust started moving

ZBIO stood above a rising 150-day average in 23 of the last 52 weekly readings, including each of the last 9 weeks. It is 5.9% above that average now. Biotechnology: 16% of its 561 stocks in an uptrend (−15 points in four weeks); Health Care: 26% (−10 points in four weeks).

SEC filings

Statistics

Rotation: Just started moving
Weeks in an uptrend: 9 in a row
Industry in uptrend: 16% -15 in 4 wk
Insider buys, 12 months: $22.8M
Insider sales, 12 months: $0
Officials’ trades on record: 0
Institutions holding: 138 (+4)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 23 of 52 weeks.

20 Apr – 19 Oct

Biotechnology: Few of its stocks are in an uptrend and the share has fallen sharply over four weeks. Health Care: A minority of its stocks are in an uptrend and the share has fallen sharply over four weeks.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

No member of Congress or official has disclosed a trade in it.

Insiders

Buy orders, 12 months16

Sale orders, 12 months0

Buyers · sellers5 · 0

Who	Did	Shares	Traded
Leon O. Moulder, Jr.Chief Executive Officer	bought	60,000at $16.88	18 May 2026filed 18 May 2026
Leon O. Moulder, Jr.Chief Executive Officer	bought	35,000at $17.62	29 Apr 2026filed 29 Apr 2026
Leon O. Moulder, Jr.Chief Executive Officer	bought	25,000at $18.02	28 Apr 2026filed 29 Apr 2026
Hongbo LuDirector	bought	75,000at $20.00	31 Mar 2026filed 31 Mar 2026
Leon O. Moulder, Jr.Chief Executive Officer	bought	34,000at $19.31	31 Mar 2026filed 31 Mar 2026
Fairmount Funds Management LlcDirector	bought	150,000at $20.00	31 Mar 2026filed 1 Apr 2026
Hongbo LuDirector	bought	3,768at $18.63	31 Mar 2026filed 2 Apr 2026
Leon O. Moulder, Jr.Chief Executive Officer	bought	20,000at $18.23	30 Mar 2026filed 31 Mar 2026
Patricia L. AllenDirector	bought	4,160at $26.36	13 Feb 2026filed 13 Feb 2026
Patricia L. AllenDirector	bought	5,000at $23.77	12 Feb 2026filed 13 Feb 2026
Patricia L. AllenDirector	bought	5,700at $24.34	12 Feb 2026filed 13 Feb 2026
Patricia L. AllenDirector	bought	5,000at $26.50	12 Feb 2026filed 13 Feb 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders138+4 on the quarter

New · exited29 · 24

Reported value$1.5B

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
FMR LLCadded · filed 13 Aug 2026	9,506,701$241.3M	+424,701+4.7%
SR One Capital Management, LPunchanged · filed 12 Aug 2026	5,037,854$127.9M	00.0%
NEA Management Company, LLCunchanged · filed 14 Aug 2026	4,023,219$102.1M	00.0%
ENAVATE SCIENCES GP, LLCunchanged · filed 14 Aug 2026	3,919,159$99.5M	00.0%
FEDERATED HERMES, INC.reduced · filed 12 Aug 2026	3,116,805$79.1M	-10,226−0.3%
BlackRock, Inc.added · filed 7 Aug 2026	2,686,225$68.2M	+648,677+31.8%
Capital International Investorsadded · filed 12 Aug 2026	2,502,912$63.5M	+68,912+2.8%
Polar Capital Holdings Plcreduced · filed 14 Aug 2026	2,412,772$61.2M	-135,672−5.3%
Fairmount Funds Management LLCunchanged · filed 14 Aug 2026	2,359,025$59.9M	00.0%
STATE STREET CORPadded · filed 7 Aug 2026	2,055,100$52.2M	+584,177+39.7%